Russia and the US have agreed to further reductions in their nuclear arsenals as the two nations’ presidents, Dmitri Medvedev and Barack Obama, aim to sign the deal on 8 April in the Czech Republic (New York Times, Wall St. Journal). The deal would reduce the number of warheads on each side from 2,200 to as low as 1,500, and would also cut the number of air, sea and land launchers in half, from 1,600 to 800. The agreement represents a renewal of the Strategic Arms Reduction Treaty, or Start. Arms control proponents at the Center for American Progress hailed the agreement as a “historic achievement”. But to enter into force in the US, the treaty will require the approval of two-thirds of the Senate, where Republicans have already voiced their opposition.