The Harrier Jump Jet
The USSR was motivated by the British Navy to design their very own aircraft. They called it the Yakovlev Yak-38. They did their best but ultimately failed to have their very own version of the British aircraft.
In history, it's better known as the Harrier Jump Jet since it could really only ever "jump" off the tarmac. On a good day, it stayed 20 minutes up in the air. The landings were always shaky and simply not reliable enough to serve any purpose to the USSR. They had to go back to the drawing board after retiring the fleet.