Ukraine’s security agency says it has tracked down and killed Russian agents who assassinated a Ukrainian intelligence officer during the week.The SBU said in a statement said the Russian agents were killed after resisting arrest.

Hundreds of Russian drones flying from all directions attacked Kyiv overnight into Thursday in an apparent new Russian tactic, marking a second consecutive night of ferocious attacks on Ukraine.

KYIV, Ukraine -- Russia fired more than 100 drones at civilian areas of Ukraine overnight, authorities said Monday, as the Kremlin dismissed the country’s transport chief after a weekend of travel chaos when Russian airports grounded hundreds of flights due to the threat of Ukrainian drone attacks.

President has become increasingly frustrated with Russian leader as efforts to broker Ukraine ceasefire have faltered