The administration of U.S. President Joe Biden inherits a familiar portfolio of issues relating to Iran: the country has an advancing nuclear program, a ballistic missile arsenal, and a regional policy of supporting proxy groups. The first of these concerns will be the most pressing for the new administration to address: ever since May 2018, when U.S. President Donald Trump withdrew from the Iran nuclear deal and began increasing sanctions pressure on Tehran, the Iranian government has accelerated its nuclear development, reducing its breakout time—the window within which it could leap to...…The administration of U.S. President Joe Biden inherits a familiar portfolio of issues relating to Iran: the country has an advancing nuclear program, a ballistic missile arsenal, and a regional policy of supporting proxy groups. The first of these concerns will be the most pressing for the new administration to address: ever since May 2018, when U.S. President Donald Trump withdrew from the Iran nuclear deal and began increasing sanctions pressure on Tehran, the Iranian government has accelerated its nuclear development, reducing its breakout time—the window within which it could leap to...WW…