Guinness World Records declares Russia's 1978 Foxbat, the Mikoyan MiG-25, to be the fastest combat ... "from idle power to maximum afterburner in less than four seconds," says the United States ...

The Mikoyan MiG-25, made in Russia ... a single-engine machine that could only achieve a thrust of 25,400 lbs. The afterburner of its engine — an R-29 B-300 — was far too wasteful a way ...