Saudi Arabia could have some form of uranium enrichment within the kingdom under a proposed nuclear deal with the United States. That's according to congressional documents and an arms control group. Both U.S. Presidents Donald Trump and Joe Biden tried to reach a nuclear deal with the kingdom to share American technology. Nonproliferation experts warn any spinning centrifuges within Saudi Arabia could open the door to a possible weapons program for the kingdom. The kingdom's assertive crown prince has suggested he could pursue a nuclear weapon if Tehran obtains an atomic bomb.

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-century. The end of the New START Treaty sets the stage for what many fear could be an unconstrained nuclear arms race. Russian President Vladimir Putin has declared his readiness to stick to the treaty's limits for one more year if Washington follows suit, but U.S. President Donald Trump has been noncommittal about extending it. Arms control advocates have warned that the treaty's termination would fuel a renewed arms race.