Russian President Vladimir Putin has offered to extend the New START treaty between Moscow and Washington -- the last remaining nuclear arms deal between the two countries -- which is due to expire in February. He said the United States should do the same. Other bilateral arms control treaties governing the world's two largest nuclear arsenals have collapsed amid acrimony between Washington and Moscow. Putin also suggested a new bilateral arms control agreement could be reached ahead of his talks with Trump in Alaska in August. Trump has also said talks on cutting nuclear stockpiles should take place after a deal is reached regarding Ukraine.