The United States is running low on some weapons as it has “burned through” years’ worth of stockpiles to arm Ukraine against Russia, says Rep. Mike Gallagher from Wisconsin.

Weapons maker Lockheed Martin Corp (LMT.N) plans to nearly double production of Javelin missiles, the antitank weapon that has helped Ukraine fight Russia's invasion, Chief Executive Officer James Taiclet said in an interview on Sunday.

The mysterious new Phoenix Ghost UAV – also dubbed as “suicide drone” -- the US supplies to Ukraine was a project overseen by a secretive Air Force office known as Big Safari, the Pentagon has revealed.

The US military aid to Ukraine has skyrocketed to billions of dollars worth of drones, helicopters, and artillery, marking Pentagon's steady march toward deeper involvement in the European war.

The CIA says there are no indications showing that Russia could be preparing to deploy tactical nuclear weapons in Ukraine.

US experts say the Ukraine conflict has prompted American firms to take serious measures to step up their cybersecurity.  

Former CIA agents criticize their successors currently in office for boasting about the US role in providing military intelligence to Kiev in its conflict with Russia.