NATO members should not be deterred from giving more military aid to Ukraine by Vladimir Putin's "reckless Russian nuclear rhetoric", outgoing NATO boss Jens Stoltenberg told Reuters in an interview on Monday.

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

President Vladimir Putin warned the West on Wednesday that Russia could use nuclear weapons if it was struck with conventional missiles, and that Moscow would consider any assault on it supported by a nuclear power to be a joint attack.