STORY: Russia's invasion of Ukraine in February 2022 has triggered the deepest crisis in Russia's relations with the West since the 1962 Cuban Missile Crisis.Speaking to Russian air force pilots, Putin said the U.S.-led military alliance had expanded eastwards towards Russia since the 1991 fall of the Soviet Union but that Moscow had no plans to attack a NATO state.The Kremlin, which accuses the U.S. of fighting against Russia by supporting Ukraine with money, weapons and intelligence, says relations with Washington have probably never been worse.Asked about F-16 fighters which the West has promised to send to Ukraine, Putin said such aircraft would not change the situation in Ukraine and that "we will destroy the aircraft just as we destroy today tanks, armored vehicles and other equipment, including multiple rocket launchers".