Russian President Vladimir Putin will oversee major military exercises on February 19.
Russia says they will involve ballistic and cruise missile launches, and test how ready its nuclear armaments are.
There are now some 149,000 Russian troops, airmen and sailors surrounding Ukraine, says its defence minister.
World leaders meet in Munich today for an annual security conference, but Russia won’t attend for first time since 1999.
Germany’s foreign minister says Russia is “challenging the European peace order” and making Cold War demands.
Russia claims more of its troops and tanks have pulled back from the Ukrainian border.
But Kyiv and the West are skeptical, claiming some units are being replaced with others.
Russia still denies plans to invade Ukraine and accuses the West of hysteria.
However, Moscow has said it could be “forced” to respond militarily if the US does not agree to its security demands.
