Ukraine fires grad rockets at Russian military targets

STORY: Russia said on Tuesday it pummelled Ukraine with missiles, aircraft and artillery overnight, killing at least 560 Ukrainian fighters and destroying dozens of armoured vehicles, rocket systems and other military equipment.

Russia's Feb. 24 invasion of Ukraine has killed thousands of people, displaced millions more and raised fears of a wider confrontation between Russia and the United States - by far the world's two biggest nuclear powers.

Putin says the "special military operation" in Ukraine is necessary because the United States was using Ukraine to threaten Russia and Ukraine was guilty of the genocide of Russian-speaking people.

Ukraine says it is fighting a land grab by Russia and that Putin's accusations of genocide are nonsense.