The second event was Mikhail Gorbachev's offer of both the Soviet Union and the United States agreeing to abolish intermediate-range ballistic missiles. Powell said that Thatcher's "most significant point was when she went on to say that we must aim at a conventional forces balance. So, after all our journeys of the last 30 or 40 years, the disappearance of the intermediate range ballistic missile revived the old question of the supposed conventional imbalance between the Russian alliance and the North Atlantic Alliance".