Russia begins three days of nuclear drills

In this photo taken from video released by Russian Defense Ministry Press Service on Oct. 26, 2022, a Yars intercontinental ballistic missile is test-fired as part of Russia's nuclear drills from a launch site in Plesetsk, northwestern Russia.

Russia's army on Tuesday began three days of nuclear weapons drills involving thousands of troops across the country, as Kiev escalates its drone attacks and with President Vladimir Putin headed to China.

Throughout its more than four-year offensive in Ukraine, Moscow has flaunted its possession of nuclear weapons and repeatedly threatened to use them.

The drills also come months after the last nuclear arms pact between Russia and Washington broke down, and amid a spate of comments from Putin touting the prowess of Moscow's atomic forces.