Bevo
Have a look at my post again “This is a mock up of what might have been” precedes the Deviantart stuff...
The Yak43 was on the drawing board and the Yak41 and subsequent Yak141 did fly before it all went wrong for the programme and the USSR. Some of the basic design elements are spookily similar to the F35B...
...I saw it with my own eyes at Farnborough in 1992
More reporting on the collaboration:
Lockheed wants to work with Yakovlev on STOVL design work | AWIN content from Aviation Week