European leaders gathered for a Council of Europe summit in Warsaw have urged the continent's major international organizations to better coordinate efforts and eliminate duplication of effort.

Leaders from the 46-member Council said Tuesday that as the European Union continues to grow, it needs to clarify the mission of several agencies that now overlap.

Officials said the duplication of efforts among the Organization for Security and Cooperation in Europe, the Council of Europe and the European Union sometimes leads to unnecessary rivalry.

On the final day of the two-day summit, the OSCE and the Council of Europe signed a cooperation agreement to better coordinate their efforts.

Summit participants are expected to sign three agreements covering the prevention and financing of terrorism and trafficking in human beings.

Some information for this report provided by AP and AFP.