The Collective Security Treaty Organization (CSTO) is a military alliance of six post-Soviet states (Armenia, Belarus, Kazakhstan, Kyrgyzstan, Russia, Tajikistan). The CSTO was formed in 1992 as a counterpart to NATO. Russia provides about 50% of CSTO's budget and the organization is headquartered in Moscow. The CSTO's objectives include maintaining security of member states and coordinating their foreign policies and defense capabilities. It operates two standing forces - the Central Asian Regional Rapid Reaction Force and the Collective Rapid Reaction Force. The CSTO has attempted cooperation with NATO but relations have deteriorated due to the Ukraine crisis.