The Russian fighter plane referred to in the crossword solution is the Mikoyan-Gurevich MiG, commonly known as the MiG. It is a series of jet fighters designed by the Mikoyan-Gurevich Design Bureau in the Soviet Union. The MiG has been used by the Soviet Union and its allies since the 1950s and is still in use today. It is one of the most successful and recognizable fighter planes in the world.