Reports & Papers

Since the Paris Agreement's adoption in 2015, a majority of the world's largest investors have begun to take action on climate change. According to a new report, the 2016–2017 year showed an average improvement in decarbonization within all major investor categories except pension funds.

This paper is a background review representing part of the initial phase of the Financing the Urban Transition work program. The review builds on a growing body of research that highlights both the importance of national sustainable infrastructure and the need to develop more effective and efficient financing mechanisms for delivering compact, connected cities that meet the UN’s Sustainable Development Goals. While progress has been made in both these areas over the last five years, there remains a policy gap between the international/national level and the municipal level.

The last seven decades without war among the great powers – what historians describe as “the long peace” – is a remarkable achievement. “This is a rare and unusual fact if you look at the last few thousand years of history,” said Graham Allison, director of the Belfer Center and moderator of the IDEASpHERE panel “Winning the Peace.” “Furthermore, it is no accident. Wise choices by statesmen have contributed to ‘the long peace,’ which has allowed many generations to live their lives.”

In the lead-up to the nuclear security summit, Advancing Nuclear Security: Evaluating Progress and Setting New Goals outlines what was accomplished in a four-year effort launched in 2009 to secure nuclear material around the globe—and what remains to be done. The effort made significant progress, but some weapons-usable nuclear materials still remain “dangerously vulnerable." The authors highlight the continuing danger of nuclear and radiological terrorism and call for urgent action.

The Belfer Center’s Eben Harrell and Pulitzer Prize-winning author David E. Hoffman for the first time report the details of one of the largest nuclear security operations of the post-Cold War years — a  secret 17-year, $150 million operation to secure plutonium in the tunnels of Degelen Mountain.

A long-standing goal of diplomacy with Iran is persuading Iran to suspend its enrichment operations while it clarifies its past activities and while negotiations proceed on a more permanent resolution to the nuclear crisis. However, there is problem in using suspension of nuclear material production as a negotiating step: The technical details of suspension have never been clearly defined. The international community needs to be aware of the diversion risks during a suspension of enrichment activities and should mitigate these risks by including the necessary verification measures during negotiations and signing of any agreement on suspension.

Given the seriousness of the ongoing standoff on the Korean peninsula, South Korea's emergence as an active contributor to international security addressing challenges far from the Korean peninsula is a striking new development, marking South Korea's emergence as a producer rather than a consumer of global security resources. This volume outlines South Korea's progress and accomplishments toward enhancing its role and reputation as a contributor to international security.

Nearly all of the 190 signatories to the Nuclear Non-Proliferation Treaty (NPT) agree that the forty-two-year-old treaty is fragile and in need of fundamental reform. But gaining consensus on how to fix the NPT will require reconciling the sharply differing views of nuclear weapon states and non-nuclear weapon states. Strengthening the international rules is increasingly important as dozens of countries, including some with unstable political environments, explore nuclear energy. The result is an ever-increasing distribution of this technology. In this paper, Steven E. Miller outlines the main points of contention within the NPT regime and identifies the issues that have made reform so difficult.

In the Foreword to this paper by Andrei Kokoshin, Belfer Center Director Graham Allison writes: "The global nuclear order is reaching a tipping point. Several trends are advancing along crooked paths, each undermining this order. These trends include North Korea’s expanding nuclear weapons program, Iran’s continuing nuclear ambitions, Pakistan’s increasing instability, growing doubts about the sustainability of the nonproliferation regime in general, and terrorist groups’ enduring aspirations to acquire nuclear weapons. Andrei Kokoshin, deputy of the State Duma and former secretary of Russia’s Security Council, analyzes these challenges that threaten to cause the nuclear order to collapse in the following paper."