CAIRO - The Arab League (AL) Sunday called on the United Nations to form a joint UN-AL peacekeeping force for Syria, according to a resolution adopted by Arab foreign ministers in Cairo.

In the resolution, the Arab League also decided to tighten economic sanctions on Syria and called on Arab countries to stop all diplomatic cooperation with the regime of Syria.

The regional bloc proposed holding an international conference for the so-called "Syrian friends," and decided to end the Arab observing mission in violence-hit Syria and provide relief for Syrian refugees.