Signatories of the letter include a former IAEA director-general, two former special representatives to the president of the United States on nonproliferation, and several former high-level officials from the National Security Council, the National Intelligence Council, and the State Department, among other agencies.

Analysts will review the most consequential nuclear weapons challenges that the incoming administration will need to address in its first 100 days and outline their recommendations as described in the new report, "Nuclear Challenges for the Biden Administration in the First 100 Days."

Arms control offers a tool to enhance U.S. security. After extending the 2010 New Strategic Arms Reduction Treaty (New START), the Biden administration should seek to engage Russia in negotiation of a follow-on agreement and use that to draw third-country forces into the arms control process.

President-elect Joe Biden is planning to tackle many foreign policy issues within the first 100 days of his administration, including the COVID-19 pandemic, the Paris climate agreement, and nuclear nonproliferation, but he should also take steps to strengthen controls surrounding the transfer of conventional arms.

President Joe Biden has a narrow window of opportunity after his inauguration to head off a nuclear crisis with Iran by stabilizing the 2015 multilateral nuclear deal with Iran and laying the groundwork for future negotiations on the country’s nuclear program.