Russia's nuclear doctrine has been amended to facilitate the use of nuclear weapons against the West, claims Alexander Lukashenko.

Putin has extended the list of scenarios that could lead to Russia using nuclear weapons. Whether he means it is a question critical to the course of the war. If he is serious, the conflict could turn into World War Three.

Russian President Vladimir Putin has set a "red line" for the U.S. and its allies, indicating that Moscow may consider a nuclear response.