The 20th Annual Session of the OSCE Parliamentary Assembly was held from 6 to 10 July 2011 in Belgrade, Serbia, under the general theme of "Strengthening the OSCE's Effectiveness and Efficiency -- A new start after the Astana Summit." It concluded with the elections of Assembly Officers and the adoption of the Belgrade Declaration, available in English, French and Russian. “The OSCE PA deplores the recent increase in tension around Nagorno-Karabakh, and urges that increased political efforts be made within the OSCE to settle the unresolved conflicts in Nagorno-Karabakh, as well as in Moldova and Georgia,” the declaration stressed.