Exhaust-Only Ventilation Exhaust-only ventilation is the reverse of supply-only ventilation; stale air leaves the building from a known location (through exhaust fans ducted to the outdoors) and outdoor air enters the building from an unknown location.
In the 1960s, the Soviet Union began to prepare the Warsaw Pact for its internal function of keeping the NSWP member states within the alliance. The Soviet Union took a series of steps to transform the Warsaw Pact into its intra-alliance intervention force.
France, however, remained a member of the alliance, though NATO headquarters had to be moved from France to Belgium. There are now 28 member nations, including several from the former Warsaw Pact, an alliance forged under Soviet occupation of Eastern Europe.NATO's purpose 62 years after its birth is much different now.ibya war raises new doubts over why NATO exists. March 31, 2011 | By Ron Smith. It was said upon the creation of the North Atlantic Treaty Organization in April of 1949 that NATO's purpose was three-fold: to keep the Russians out, the Americans in and the Germans down.