The biggest change to foreign policy dealt with "uncommitted nations". There were two types of neutrality according to the Soviets, those by ideology and those by circumstance. Many of the nations that were neutral came from both of these groups and were former colonies of European powers. During Stalin there was no room for neutral countries and the idea of neutral powers came about under Khrushchev. Khrushchev's biggest contribution to foreign policy is taking advantage of other aspects of de-Stalinisation to try and show the world a different Soviet Union more in line with traditional socialist ideals. Contemporary historians regard the beginning of de-Stalinization as a turning point in the history of the Soviet Union that began during the Khrushchev Thaw. It subsided during the Brezhnev period until the mid-1980s, and accelerated again with the policies of "perestroika" and "glasnost" under Mikhail Gorbachev. De-Stalinization has been considered a fragile process. Historian Polly Jones said that "re-Stalinization" was highly likely after a brief period of "thaw". Anne Applebaum agrees: "The era which came to be called the 'Thaw' was indeed an era of change, but change of a particular kind: reforms took two steps forward, and then one step—or sometimes three steps—back."