Given Tehran's defiant response to the European and American effort to constrain its nuclear program, it is time for bolder diplomacy out of Washington. U.S. President George W. Bush should take a page from the playbook of Ronald Reagan, who negotiated with an evil Soviet regime--competing in the war of ideas, but addressing the enemy's security concerns through arms-control agreements.

Iran's intransigence is both deeply unfortunate and perfectly predictable. It is unfortunate because Tehran's refusal to suspend its uranium-enrichment operations immediately--as demanded in July by the U.N. Security Council in a legally binding resolution--suggests that Iran is moving more quickly than expected toward a nuclear-weapons capability. Tehran has now turned the nuclear crisis into a test of the whole U.N. Security Council system. And Russia and China's current position, threatening to veto any biting sanctions against Iran, suggests that the Security Council may well fail this crucial test.

Tehran's response is predictable, however, because the offer on the table contains both inadequate economic carrots and barely credible threats of sanctions and military force. The carrots appeared impressive at first glance--in return for a suspension of enrichment we reportedly promised to provide light-water nuclear reactors and to help Iran with civil aviation and telecommunications technology. But we did not offer the one incentive that might possibly work, security guarantees that could reduce Iran's desire for nuclear weapons.

This omission is striking. The Iranian government can't talk openly about their security concerns because that would blow their cover story that the nuclear program is only for energy production. And Washington does not want to discuss such worries because it wants to keep open the possibility of removing the regime by force. "Security assurances are not on the table," U.S. Secretary of State Condoleezza Rice too cleverly argued this spring: "It is a little strange to talk about security guarantees ... I thought the Iranian position was that they weren't developing a nuclear bomb."

This is partly a crisis of our own making, as the Bush administration has practiced the reverse of Teddy Roosevelt's maxim--speaking loudly and carrying a small stick. Think about how Tehran reacted when Bush stated (in his second Inaugural Address), "The rulers of outlaw regimes can know that we still believe as Abraham Lincoln did: 'Those who deny freedoms to others deserve it not for themselves; and, under the rule of a just God, cannot long retain it." Or when Bush dramatically told reporters last April that "all options are on the table," in direct response to a question about whether he was considering a nuclear attack against Iran. Such statements only encourage Iran to develop a nuclear deterrent quickly, before the United States can carry out its perceived aggressive intent. Last month, Iran's National Security Council Secretary Ali Larijani pointedly complained about such rhetoric. "How can a side that wants to topple the regime also attempt to negotiate?"

Given the current vulnerability of U.S. forces in Iraq, the deteriorating situation in Afghanistan, and the lack of Israeli success against Hizbullah, Iranian officials seem confident that they face no immediate threat of a U.S. military assault. But they are clearly worried that Bush just might attack Iran right before he leaves office in January 2009, or that his successor might do so once U.S. forces withdraw from Iraq.

The best way to prevent a nuclear Iran is for Washington to offer the kind of security assurances that might reduce support in Tehran for building a nuclear arsenal. It will be hard to make such assurances credible, but a public U.S. promise to take forcible regime change off the table, and a U.N. Security Council commitment to protect the "political sovereignty" of Iran could help. Involving the Security Council could also pull China and Russia back into the nonproliferation coalition and enhance the U.N.'s legitimacy.

There is very little time left, which means negotiations should begin despite Iran's unfortunate opening position. Tehran's response reportedly indicated a willingness to negotiate all aspects of its nuclear program, so working out an agreement for Iran to limit itself to low-level uranium enrichment might still be possible. This would work only if Tehran accepts full IAEA inspections and a freeze on future centrifuge construction. Will they? The one thing that might cause Tehran to do so, and that would compensate for any loss of face, would be an assurance that the United States will not launch another preventive war, as it did in Iraq, to remove the Iranian regime. If in turn we get a nuclear-free Iran, that's a good deal for the West as well.

As a model of a democratizing and secular Muslim state that has been a stalwart ally for more than 50 years, Turkey is of enormous strategic importance to the United States and Europe, especially at a time when the widening chasm between the West and the Islamic world looms as the greatest foreign policy challenge. Yet Ankara's relations with Washington are strained - over Iraq, Cyprus, Syria, Iran and Hamas - and Turkey's prospects for joining the European Union remain uncertain.

As Washington prepares for a visit Wednesday by Turkey's foreign minister, Abdullah Gul, the United States and Turkey should explore three initiatives to repair and revitalize their relationship.

First, although the United States and Turkey share broad goals in Iraq, the situation there threatens a potential breach in relations. The Turks feel the war in Iraq has undermined their security by stirring Kurdish nationalism. It also coincided with renewed terrorist attacks mounted by the Kurdistan Worker's Party from inside Iraq. To address this challenge, the United States should initiate a trilateral dialogue on the future of Iraq with Turkey and representatives of the Iraqi government, including Kurdish leaders.

If the effort to build a functioning Iraqi government is successful, this trilateral consultative process will support the common goal of a unified and sovereign Iraq; should the Iraqi government fail, the dialogue will provide a mechanism for managing some of the worst potential consequences.

Second, Washington must make it a diplomatic priority to persuade skeptics in Europe to take a more positive approach toward Turkey. Peering into the future and considering the strategic implications of a Turkey unmoored - or, more darkly, a Turkey that turns against its traditional partners, aligning itself more closely with Damascus, Moscow or Tehran - should be instructive.

Washington needs to make the case to its European allies that delaying Turkey's accession to the EU could harm their security. The longer accession takes, the more likely it is that Turks will become disenchanted with the EU and look elsewhere for opportunities; it is also more likely that Turkey's impressive political reform process, which began in 2002, will stall.

Further, Washington should take a leadership role in working to resolve the Cyprus conflict, which threatens to create further obstacles to Turkish EU membership. Rather than waiting for a new UN or EU initiative on the future of the island, America should catalyze a renewed negotiation process. A special Cyprus coordinator would work with the UN and EU to develop a new plan for reuniting the island, encourage European leaders to use their collective clout to require more constructive behavior from the Cypriot government, and coordinate Washington's political, diplomatic and economic steps to break Turkish Cypriots from their international isolation.

Third, the United States and Turkey should establish a high-level commission that meets twice a year and provides a structured mechanism for interaction across agencies of government, nongovernmental organizations and the private sector. At the outset, three working groups should be launched, focusing on security, economic and commercial ties, and educational and cultural exchanges.

A U.S.-Turkey cooperation commission could facilitate the re-establishment of the sustained interaction that characterizes America's strongest partnerships, and provide a foundation for keeping Turkey aligned with the West should Ankara's bid for EU membership ultimately fail.

As tensions over the outcome in Iraq mount, the prospects for generating positive momentum in U.S.- Turkey relations are diminishing. The consequences of a disoriented Turkey would be even greater than a failure in Iraq. America and Europe must do everything they can to ensure that Turkey remains firmly anchored in the West.

Steven A. Cook and Elizabeth Sherwood-Randall are fellows at the Council on Foreign Relations.

The Center on Democracy, Development, and the Rule of Law (CDDRL) at Stanford University has concluded its second year of Stanford Summer Fellows on Democracy and Development. This year's fellows - 26 outstanding civic, political, and economic leaders from 21 countries in transition - were selected from more than 800 applications.

The summer fellows program brought leaders from important, transitioning countries such as Iraq, Afghanistan, Iran, Pakistan, China, and Russia to Stanford for three weeks (this year, July 31 to August 18). The new summer fellows included presidential advisers, prominent journalists, key figures in human rights and democracy movements, academics, and representatives of international governmental and non-governmental organizations. The fellows participated in morning seminars with leading Stanford faculty, including CDDRL director Michael A. McFaul, Kathryn Stoner, Larry Diamond, Avner Greif, Erik Jensen, and Stanford President Emeritus Gerhard Casper. In the afternoons, fellows attended talks by keynote speakers and led class sessions themselves, sharing insight into how reform progressed (or failed to progress) in their home countries and exchanging ideas for positive change. This year's keynote speakers included Carl Gershman, the president of the National Endowment for Democracy; Joan Blades, co-founder of MoveOn.org; Marc Pomar, president of the International Research and Exchanges Board (IREX); and Judge Pamela Rymer, United States Court of Appeals for the Ninth Circuit.

The Center on Democracy, Development, and the Rule of Law (CDDRL) at Stanford University's Freeman Spogli Institute for International Studies (FSI) seeks to promote innovative and practical research to assist transitioning countries design and implement policies that will foster democracy, promote balanced and sustainable growth, and advance the rule of law. It supports specialized teaching, training, and outreach to assist countries struggling with political, economic, and judicial reform, constitutional design, economic performance and corruption.

North Korea's response to the United Nations resolution demanding that it suspend its ballistic missile program and resume a moratorium on launches was typically belligerent. But like the multiple launch of seven missiles earlier this month, the North Korean vow to continue to fire off its missiles should not be dismissed as mere political theater.

The missile tests were neither a gesture of defiance nor a desperate bid for negotiations. Nor can they be dismissed as the impulsive act of an irrational leader. It was, as Pyongyang itself so succinctly put it, a "military exercise."

The launches are only the latest evidence of a decadeslong effort by Pyongyang to redress the military balance in its favor. For North Korea, missiles are an attempt to compensate for weakness. The communist state has a large but technologically backward army, lacking the air power to compete with the United States and its South Korean ally. Rockets give it the firepower to back an assault on the South and to hold U.S. forces in Japan, the rear base for Korea, at bay.

The late North Korean leader Kim Il Sung set this goal as far back as 1965 when he established an academy to develop missiles and other modern weaponry.

"If war breaks out, the U.S. and Japan will also be involved," he said. "In order to prevent their involvement, we have to be able to produce rockets which fly as far as Japan."

I encountered one crucial tentacle of Kim's program some 14 years ago, in late October of 1992.

A group of 64 Russian rocket scientists, accompanied by their wives and children, were stopped just as they were about to board a flight to North Korea. The scientists were employees of a super-secret facility in the Urals, the V.P. Makeyev Design Bureau, responsible for the development of the Soviet Union's submarine-launched ballistic missiles.

As the bureau chief for the Christian Science Monitor, I pieced the story together later from Russian press accounts and interviews with the scientists and others. A middleman with apparent official backing had offered the bureau, starving for orders and left adrift by the sudden end of the Cold War, work in North Korea.

Scientists who were making the equivalent of $15 a month jumped at offers of up to $4,000 a month to help a former Soviet ally. In the spring, a group of 10 scientists had gone for an initial foray. The Koreans, one of the scientists told me, initially never directly asked about nuclear warheads or missile designs. They claimed only to be interested in rocket science.

The Russians came home that fall and signed up dozens of their comrades as recruits. But the project was not officially sanctioned, and the KGB held them outside of Moscow for two months while the broker tried to re-negotiate their departure. Russian officials later described the North Koreans' aim, without mentioning them by name, as an attempt to build "combat missile complexes that could carry nuclear weapons."

North Korea began with copies of Soviet short-range Scud missiles and moved on to medium-range "Nodong" missiles, but they lacked the range and accuracy to meet Kim's target. A decade after the airport incident, in 2003, credible reports emerged that the North Koreans were deploying a new, far more accurate missile based on the Soviet SS-N-6, a submarine-launched rocket developed by Makeyev in the 1960s. The Nodong-2, as some labeled it, could reach all U.S. bases in Japan and possibly even to Guam.

In the 1990s, the North Koreans developed a long-range missile, potentially reaching U.S. territory, to lend credence to claims they could deter a pre-emptive strike on their nuclear or missile facilities. Some experts believe the Nodong-2 also functions as the second stage of this missile. American intelligence officials believe an otherwise inexplicable leap in missile technology was thanks to the help of Russian scientists.

Still the self-imposed missile test moratorium that Pyongyang agreed to in 1999 made it difficult to move ahead. Late last year, according to a recent Wall Street Journal story, the North Koreans delivered a dozen Nodong-2 missiles to Iran, a close collaborator on missiles since the 1980s. Unconfirmed reports from Germany say Iran tested the missile in January.

The Nodong-2 may have been tested this month, one of the six short- and medium-range missiles set off in a wave or as a stage of the long-range missile. Data from the launch is not yet conclusive, according to U.S. and South Korean officials. Despite the failure of the long-range attempt, it may be more significant that Pyongyang carried out the first successful launch of a Nodong since 1993 and a nighttime barrage of Scuds and Nodongs.

The display of diplomatic unity at the United Nations may give Pyongyang pause. But the relentless nature of North Korea's pursuit of its ballistic missile strength suggests that this is not a bargaining chip that will be readily traded away.