Putin’s air force flew a four-hour mission over international waters (Image: Getty) NATO warplanes were scrambled to monitor Russian strategic bombers flying over the Baltic Sea. Vladimir Putin’s air force flew a four-hour mission over international waters amid deep tension. The nuclear-capable Tu-22M3 aircraft were escorted by Russian Su-35 fighters. The Russian defence ministry TV channel Zvezda admitted that NATO fighters had monitored the bombers. “At certain stages of the route, the aircraft were escorted by fighter jets from foreign states,” said the report. “All flights are conducted in strict accordance with international rules for the use of airspace.” An F-35 used by some NATO airforces appeared visible in the Russian footage. READ MORE: Russia burning as Ukraine ‘drone swarm’ rains hell in apocalyptic strike READ MORE: Putin hammerblow as missiles strike giant Russian plant making killer drones Putin’s air force conducted a four-hour flight over international waters amid heightened tensions (Image: Getty) The show of strength from the Kremlin came as Moscow has made allegations that Finland and Baltic states Estonia, Latvia and Lithuania …