FAS Strategic Security Blog

Hans Kristensen with B53 Bomb

By Katie Colten and Hans Kristensen

[Modifed] Today, one of the largest weapons in the United States nuclear weapons arsenal, the B53, will be dismantled at the Pantex Plant in Amarillo, Texas. Developed during the Cold War and deployed in 1962, this bomb weighs as much as a minivan and has an explosive yield of nine megatons, equivalent to 750 Hiroshima bombs.

Retired from the arsenal in 1997, the dismantlement of the B53 marks the end of the era of large, multi-megaton bombs, a hallmark of the Cold War. The largest-yield warhead in the U.S. stockpile today is the B83 bomb, which has a maximum yield of 1.2 Megatons.

Administration officials have been busy spinning the dismantlement as proof of the administration’s commitment to nuclear disarmament and as vindication of its plan to spend billions of extra dollars to modernize the nuclear weapons production complex. Continue reading »

FAS joined 48 organizations in signing a letter to United States Representatives asking them to cosign Representative Markey’s letter to members of the Super Committee. Markey’s letter urges Super Committee members to increase U.S. security by reducing spending on outdated and unaffordable nuclear weapons programs.

Additionally, this support letter offers specific suggestions to Congress on how to scale back new nuclear weapons programs and help close the budget deficit. Continue reading »

by Alicia Godsberg

The NPT Review Conference ended last Friday with the adoption by consensus of a Final Document that includes both a review of commitments and a forward looking action plan for nuclear disarmament, non-proliferation and the promotion of the peaceful uses of nuclear energy.  In the early part of last week it was unclear if consensus would be reached, as states entered last-minute negotiations over contentious issues.  While the consensus document represents a real achievement and is a relief after the failure of the last Review Conference in 2005 to produce a similar document, much of the language in the action plan has been watered down from previous versions and documents, leaving the world to wait until the next review in 2015 to see how far these initial steps will take the global community toward fulfilling the Treaty’s goals. Continue reading »

by Alicia Godsberg

There is cause for cautious optimism after Presidents Obama and Medvedev signed their START follow-on Joint Understanding in Moscow last Monday – the goal of completing a legally binding bilateral nuclear disarmament agreement with verification measures is preferable to letting START expire without an agreement or without one that keeps some sort of verification protocol.  The Joint Understanding leaves some familiar questions open, such as the lack of definition of a “strategic offensive weapon” and what to do about the thousands of nuclear warheads in reserve or awaiting dismantlement.  But so far few analysts on either side of the nuclear debate have been talking about the big picture, what for the vast majority of the world (and therefore our own national security) is really at stake here – the viability of the nonproliferation regime itself. Continue reading »