Russia has completely ruined Ukraine's air defense system, but at the beginning of the war, Ukraine gave a befitting reply to Russian air strikes and it was because of America's Boeing F-15 fighter jets that Russia's Sukhoi 30 fighter jets. Now Ukraine has asked for more F-15 fighter jets from America and Western countries. The F-15 can fly 4800 km in one go while the Sukhoi 30 can cover a distance of 4500 km in one go. Watch this video for complete details.