From rec.aviation.military FAQ by Ross Smith

• Boeing B-29 Superfortress: SORT OF -- China still has 15 Russian-built B-29 copies (Tu-4) on its inventory; these are now used entirely for training and research. One was fitted with a pylon-mounted disk for AEW radar experiments.
• Ilyushin Il-28 ("Beagle"): YES -- The Chinese-built Hong-5 is in service in large numbers (about 650) with China, as well as North Korea and Romania, but only Egypt still operates five Russian-built Il-28s.
• Mikoyan-Gurevich MiG-15 ("Fagot/Midget"): YES -- About 20 countries operate the MiG-15UTI trainer; three (Albania, Cuba, and Romania) still operate the single-seat fighter. All Chinese MiG-15s have been retired (see also section H.11).
• Mikoyan-Gurevich MiG-17 ("Fresco"): YES -- About 25 countries still use the MiG-17, or the Chinese-built J-5. The Chinese PLA Air Force only operates the JJ-5 trainer version.
• Mikoyan-Gurevich MiG-19 ("Farmer"): YES -- The Chinese J-6 is still in service with 14 countries, but only Cuba still flies the genuine article (about 30). Production of the J-6 stopped about 1981.
• Myasishchyev M-3/4 ("Bison"): YES -- The last M-3M and M-4 "Bison-A" bombers and M-3MD "Bison-C" maritime patrol aircraft were retired or converted in 1987. A small number of M-3MS-2 "Bison-B" tankers remain in service with the Russian AF, but are being replaced by the Il-78T "Midas", and will probably be gone by the end of 1994. A few aircraft (possibly only one) have been converted to M-3VM-T Atlant heavy transports; these remain in use, mainly for transporting space hardware, pending the manufacture of more An-225 transports.
• Sukhoi Su-7 ("Fitter/Moujik"): YES -- Only Algeria, Iraq, and North Korea (largest user, with 30) still fly the Su-7.
• Sukhoi Su-15 ("Flagon"): NO -- This was withdrawn from Russian service about 1992.
• Tupolev Tu-128 ("Fiddler"): NO -- This was withdrawn from Russian service about 1992.
• Yakovlev Yak-28 ("Brewer/Firebar/Maestro"): NO -- The last Yak-28P "Firebar" interceptors were withdrawn in the 1980s, the last Yak-28R "Brewer-D" reconnaissance aircraft about 1990, and the last Yak-28PP "Brewer-E" electronic warfare aircraft (along with the last Yak-28U "Maestro" trainers) about 1992.
• Yakovlev Yak-38 ("Forger"): NO -- The Russian Navy retired the last of its Yak-38 fleet around the end of 1993.