A nuclear treaty first signed in 2010 is expiring this week. If it's not replaced, experts say a global arms race could be in the cards.

The United States and Russia are closing in on a deal to observe the New START nuclear arms control treaty beyond its expiration on Thursday, Axios reported, citing three sources familiar with the tal...

The New START Treaty, signed in 2010 by the U.S. and Russia, limited the number of deployed strategic nuclear weapons to 1,550 on each side and required on-site inspections and notifications to ensure...