NO
They were generally nonaligned (at least in principle), rather than being part of NATO, SEATO, or the Warsaw Pact.
As Hungary is now part of EU, the other 26 member nations.
Germany, Austria-Hungary, and Italy
Three nations belonged to the triple alliance and they were Germany, Austria-Hungary and Italy.
Technically, they would've been nonaligned, though many of these "nonaligned" countries actually were aligned; they just weren't formally part of NATO or the Warsaw Pact. "Third World" came about as a term for countries which were not members of the two major military alliances (NATO and the Warsaw Pact).
Poland
Three Eastern Bloc nations include Poland, Czechoslovakia, and Hungary. These countries were part of the Soviet sphere of influence during the Cold War and aligned with communist ideologies. They played significant roles in the political and social dynamics of the Eastern Bloc.
The Vietnam War was part of the cold war. The cold war was between governments (Nations/Countries).
Austria/Hungary, Germany, Russia, France, England, Belgium, United States..
U.S.A and RUSSIA and it wasn't really a war
Triple Alliance, secret agreement between Germany, Austria-Hungary, and Italy formed in May 1882 and renewed periodically until World War I.
Nations:PolandCzechoslovakiaHungaryRomaniaAlbaniaBulgariathe DDR (East Germany)The USSR