Trump says US will withdraw from nuclear arms treaty with Russia

“This is the most severe crisis in nuclear arms control since the 1980s,” said Malcolm Chalmers, the deputy director general of the Royal United Services Institute. “If the INF treaty collapses, and with the New Start treaty on strategic arms due to expire in 2021, the world could be left without any limits on the nuclear arsenals of nuclear states for the first time since 1972.”