No limits, no inspections: US and Russia face post–New START era as Trump pushes new nuclear deal

The United States and Russia are entering a new phase of nuclear relations with no treaty limiting their arsenals, as President Donald Trump calls for a sweeping new arms control agreement and Russian officials warn that Washington’s approach would make any deal impossible.

The last agreement that capped U.S. and Russian nuclear weapons, known as New START, expired Thursday, leaving the world’s two largest nuclear powers without legally binding limits on their arsenals or an inspection regime.