I think the range-threshold never came into force.The American ALCM(AGM-86??) which was used in recent conflicts has a range of over 1,500kms.
AGM-86C/D Conventional Air Launched Cruise Missile
"Range: Nominal: 600nm Specific: Classified"
This puts our ALCM missiles within "neighborhood" of the START I treaty ALCM specifications. Only 35 of that type were launched in GWI. The majority of the cruise missiles used in that conflict were longer range sub and ship launched missiles.
Tomahawk Cruise Missile
Range:
Block II TLAM-A – 1350 nautical miles (1500 statute miles, 2500 km)
Block III TLAM-C - 900 nautical miles (1000 statute miles, 1600 km)
Block III TLAM-D - 700 nautical miles (800 statute miles, 1250 km)
Block IV TLAM-E - 900 nautical miles (1000 statute miles, 1600 km)