Russia said on Monday it would practice the deployment of tactical nuclear weapons as part of a military exercise after what Moscow said were threats from France, Britain, and the United States.
Russia says the United States and its European allies are pushing the world to the brink of confrontation between nuclear powers by supporting Ukraine with tens of billions of dollars of weapons, some of which are being used against Russian territory.
Russia's defence ministry said it would hold military drills including practice for the preparation and deployment for use of non-strategic nuclear weapons. It said the exercises were ordered by President Vladimir Putin.
Missile forces in the Southern Military District, aviation and the navy will take part, the defence ministry said.
The exercise is aimed at ensuring Russia's territorial integrity and sovereignty "in response to provocative statements and threats by certain Western officials against the Russian Federation", it said.
Russia has about 1,558 non-strategic nuclear warheads, according to the Federation of American Scientists, though there is uncertainty about exact figures for such weapons due to a lack of transparency.
Major nuclear powers routinely check their nuclear weapons but very rarely publicly link such exercises to specific perceived threats in the way that Russia has.
Kuwait's Ministry of Health has reported that six people were injured early on Monday due to falling projectiles and debris in a residential area in the northern part of the country.
Russia has launched a drone attack on Ukraine's Black Sea port of Odesa overnight on Monday, killing three people, and damaging infrastructure, residential and administrative buildings, the regional governor said.
The US, Iran, and a group of regional mediators are discussing the terms for a potential 45-day ceasefire that could lead to a permanent end to the war, Axios reported on Sunday, citing four US, Israeli and regional sources with knowledge of the talks.
US special forces rescued a downed airman in Iran in a complex operation that averted a potential crisis for President Donald Trump, as the war entered its sixth week with little sign of progress in diplomatic efforts for a resolution.