Ukraine: the history behind Russia's claim that Nato promised not to expand to the east

The main issue highlighted by the crisis on the Ukraine borders over the past few months has predominantly focused on the role of Nato and the friction over the eastward expansion of the alliance. This has been a constant message emerging from the Kremlin: that the Nato membership of many parts of the old Soviet Bloc, and the prospective membership of Ukraine to the alliance, poses a threat to Russian sovereignty.

But the decision to accept former members of the Warsaw Pact, the defensive alliance which included the USSR and several eastern European countries, is being subject to a revisionist history. This is perpetuating a myth that Nato promised not to expand eastwards after the Soviet Union dissolved.