The assault, carried out overnight on May 24, involved hundreds of drones and missiles and, according to Reuters and other international media,

Belarus says it has launched joint drills with Russia to practice the use of nuclear weapons that Moscow has deployed on the territory of its neighbor and ally.

Ukraine-Russia war latest: Moscow warns foreign citizens to leave Kyiv after threatening more revenge attacks - At least four people were killed in the mass attack of Ukraine’s capital on Sunday

The chilling development comes amid soaring tensions between Russia and NATO.

Trucks carrying intercontinental ballistic missiles rumbled over forest roads, atomic-powered submarines set sail from Arctic and Pacific ports, and crews scrambled into warplanes as Russia and neighboring Belarus held the final stage of their joint nuclear drills Thursday.

Top Ukrainian officials claim Moscow’s woes are growing as independent estimates suggest Russia’s economy is faltering.

Moscow and Minsk held joint military drills to practice using Russian nuclear weapons, the Belarus defence ministry said on Monday. Russia deployed nuclear-capable hypersonic missiles to its western neighbour last year,

Ukrainian officials said around 600 drones and 90 missiles were fired in the attack.