Presidents of Russia, United States and France regrets Azerbaijan and Armenia for distaking any decisive steps to resolve the Nagorno-Karabakh conflict, and urged the parties to accelerate the harmonization of the basic principles of resolving of problem.
Russia, U.S. and France are co-chairs of OSCE Minsk Group on Karabakh settlement.
"We regret that Armenia and Azerbaijan did not take decisive steps, which our countries have called on them in a joint statement issued May 26, 2011 in Deauville," - said in a joint statement at the summit of "twenty" by leaders of the three countries.
They called on both sides meet the obligations for accelerating agreement on basic principles of the Nagorno-Karabakh conflict, contained in a statement that made in Sochi on January 23, 2012,.
The statement noted that Moscow, Washington and Paris were united in a firm commitment for the peaceful settlement of Nagorno-Karabakh conflict.
"Parties of the conflict should not continue to postpone important decisions needed to achieve lasting and peaceful settlement" - the document says.
The conflict between the two South Caucasus countries began in 1988 when Armenia made territorial claims against Azerbaijan. Armenian armed forces have occupied 20 per cent of Azerbaijan since 1992, including the Nagorno-Karabakh region and seven surrounding districts.
Azerbaijan and Armenia signed a ceasefire agreement in 1994. The co-chairs of the OSCE Minsk Group - Russia, France and the U.S. - are currently holding peace negotiations.
Armenia has not yet implemented the U.N. Security Council's four resolutions on the liberation of the Nagorno-Karabakh and the surrounding regions.