The Double-Track Decision involved two policy "tracks". Initially, of the 7,400 theater nuclear warheads, 1,000 would be removed from Europe and the US would pursue bilateral negotiations with the Soviet Union intended to limit theater nuclear forces. Should these negotiations fail, NATO would modernize its own LRTNF, or intermediate-range nuclear forces (INF), by replacing US Pershing 1a missiles with 108 Pershing II launchers in West Germany and deploying 464 BGM-109G Ground Launched Cruise Missiles (GLCMs) to Belgium, Italy, the Netherlands, and the United Kingdom beginning in December 1983.