Twenty years ago, in the Clinton Administration, both of us helped launch a program to build a factory to turn the excess plutonium from dismantled nuclear weapons into fuel for nuclear reactors.  At that time, the full life-cycle cost estimate to make this plutonium-uranium mixed oxide (MOX) fuel was expected to be less than $2 billion dollars.  Now, however, with official cost estimates ballooning to over $30 billion, it is clear that the project has become too expensive.  It is time to stop throwing good money after bad and pursue cheaper alternatives that will serve our national security better.

The fourth and final nuclear security summit saw some serious progress, but also some missed opportunities. Matthew Bunn looks at significant wins and some losses at the 2016 Nuclear Security Summit.

The just-concluded fourth and final nuclear security summit saw some serious progress, but also some missed opportunities.

Matthew Bunn, Professor of Practice at Harvard Kennedy School and Co-Principal Investigator at the Belfer Center’s Project on Managing the Atom, sits down with Aroop Mukharji (@aroopmukharji) to talk about everything nuclear—from the nuclear football to the best way to prevent nuclear smuggling.

Matthew Bunn, Professor of Practice at Harvard Kennedy School and Co-Principal Investigator at the Belfer Center’s Project on Managing the Atom, sits down with Aroop Mukharji (@aroopmukharji) to talk about everything nuclear—from the nuclear football to the best way to prevent nuclear smuggling.

"Today and tomorrow, world leaders will gather for what will likely be the final international summit on security for nuclear weapons and the materials needed to make them—a key tool for preventing nuclear terrorism. The last time this group met, at the 2014 Nuclear Security Summit in the Hague, they declared that preventing terrorists from acquiring nuclear weapons or weapons-usable materials remained “one of the most important challenges in the years to come.” Yet, since then, nuclear security has improved only marginally, while the capabilities of some terrorist groups, particularly the Islamic State, have grown dramatically, suggesting that in the net, the risk of nuclear terrorism may be higher than it was two years ago..."

"As world leaders gather for the fourth nuclear security summit this week, in the aftermath of the horrifying terrorist attacks in Brussels, it seems likely that Belgian Prime Minister Charles Michel will have more to say than anyone else — both about real nuclear terrorist dangers and about real steps taken to improve nuclear security...."

"World leaders face a stark choice at the final Nuclear Security Summit later this week: Will they commit to efforts that continue to improve security for nuclear weapons, fissile materials, and nuclear facilities, or will the 2016 summit be seen in retrospect as the point at which attention drifted elsewhere, and nuclear security stalled and began to decline? The answer will shape the chances that terrorist groups, including the Islamic State, could get their hands on the materials they need to build a crude nuclear bomb...."

In this new report, Preventing Nuclear Terrorism: Continuous Improvement or Dangerous Decline?, Matthew Bunn, Martin Malin, Nickolas Roth, and William Tobey provide a global reality check on nuclear security. They note that effective and sustainable nuclear security capable of addressing plausible threats is the single most effective chokepoint preventing terrorists from acquiring a nuclear weapon.

The Iran nuclear deal was officially implemented on Saturday, as Iran successfully fulfilled its initial key nuclear commitments and the international community relieved major sanctions, including unfreezing about $100 billion of Iranian money. Implementation Day was met with applause from deal supporters in the U.S. and Iran, while critics have raised questions about whether Iran will adhere to its requirements and how it will flex its newfound economic power. Also in recent days, the U.S. and Iran agreed to a prisoner swap that led to the freedom of Washington Post reporter Jason Rezaian and others, and negotiated the release of American sailors detained in Iran. What does the arrival of Implementation Day mean for Iran’s nuclear program and nuclear nonproliferation, and how does it bode for the future of U.S.-Iran relations? We asked Belfer Center experts to weigh in on these and related questions.