The last remaining nuclear arms pact between Russia and the United States has expired, removing caps on their atomic arsenals for the first time in over 50 years

U.S. lawmakers have expressed concern that the end of New START could lead to “a dangerous and costly arms race” between the world’s biggest nuclear powers.

The last major arms-control agreement between the US and Russia expired Thursday, increasing the risk of a new arms race between the world’s two largest nuclear powers amid growing global instability.

The last nuclear treaty ‌between ​Russia and the United States is due ‌to expire within hours, raising the risk of a new arms race in which China will ​also play a key role. The web of arms control deals negotiated in the decades since the 1962 Cuban Missile Crisis,

The last remaining nuclear treaty between the U.S. and Russia has expired, ending decades of arms control between the two countries with the largest nuclear arsenals.

The last remaining nuclear arms pact between Russia and the United States is set to expire this week, removing any caps on the two largest atomic arsenals for the first time in more than a half-centur

U.S. President Donald Trump on Thursday rejected an offer from his Russian counterpart to voluntarily extend the caps on strategic nuclear weapons deployments after the treaty that held them in check for more than two decades expired.

The agreement between the United States and Russia limiting both countries’ nuclear weapons will expire on Thursday, marking the first time in more than five decades that the two sides will not have an active and binding framework to regulate their nuclear arsenal.