Multilateral treaty originally signed by the 22 North Atlantic Treaty Organization and Warsaw Pact nations November 19, 1990; entered into force November 9, 1992. Establishes equal East-West limits on five categories of conventional armaments (battle tanks, armored combat vehicles, artillery, combat aircraft, and attack helicopters) between the Atlantic Ocean and the Ural Mountains. Following the dissolution of the Soviet Union, all Soviet successor states with territory in the CFE area of application joined the Treaty, so that States Parties now number 30. Adaptation Agreement signed November 19, 1999, replaces Treaty’s obsolete bloc-to-bloc structure with nationally-based limits, enhances transparency by requiring States Parties to provide more information than they provided on their forces previously and increasing quotas for mandatory on-site inspections, strengthens requirements for host nation consent to the presence of foreign forces, and opens the Treaty to other European states, subject to approval by all 30 States Parties.