The Biden administration plans to extend a nuclear arms-control treaty with Russia for five years despite Russia's attempts to work around the treaty.
President-elect Joe Biden's defense secretary nominee, Lloyd Austin, dodged questions from senators about how he would update America's nuclear weapons as China and Russia increase their own stockpiles.
The United States has evidence that Iran is stockpiling enriched uranium, the key component in a nuclear weapon, in direct violation of international restrictions on Tehran’s use of the fissile material. Iran engaged in secretive nuclear work that breached international accords as recently as 2019, according to nuclear inspectors who have been blocked from accessing these contested military sites. Iran is blocking international access to critical nuclear sites and has quickened the pace of its uranium enrichment program, shortening the time it would take the country to build a nuclear weapon, according to the International Atomic Energy Agency (IAEA) and U.S experts. 
WASHINGTON (Reuters) - The United States announced its intention to withdraw from the 35-nation Open Skies treaty that permits unarmed aerial surveillance flights over participating countries, saying Russia has repeatedly violated the pact’s terms. 
Iran's launch Wednesday of a military satellite that it says will be used to conduct "intelligence warfare" against the United States violates international accords and represents a significant step forward in the Islamic Republic's ballistic missile program, U.S. officials told the Washington Free Beacon. 
GENEVA (Reuters) - The United States urged China on Tuesday to join trilateral nuclear arms talks with Moscow, calling Beijing's secrecy around growing stockpiles a "serious threat to strategic stability". 
U.S. State Department officials described Iran's blocking of a international nuclear inspector from accessing key nuclear sites last week as an "outrageous and unwarranted act of intimidation," a move that is raising concerns Iran is hiding undeclared nuclear materials. 
Iran sought to obtain illicit nuclear weapons technology as recently as 2018, according to new disclosures by German intelligence that reveal how Tehran tapped black weapons markets without the knowledge of international nuclear inspectors tasked with performing oversight on the Islamic Republic's weapons sites as part of the landmark nuclear agreement. 