The UN Security Council lacks the courage to condemn Israeli attacks on Lebanon, Malaysia's PM has said, as Islamic states hold crisis talks.
Two presidents and several prime ministers are attending the summit
He and other leaders from the world's Muslim nations warned of the effects of the violence in the Middle East as they met to discuss the crisis.
The Organisation of the Islamic Conference (OIC) is expected to call for an immediate ceasefire.
The leaders are also likely to back an international force for Lebanon.
The presidents of Iran and Indonesia and the prime ministers of Pakistan, Bangladesh, Turkey and Azerbaijan are among the representatives of 18 Islamic countries at the emergency one-day summit, which was called last week.
"Until now, unfortunately, the international community is in paralysis," said Malaysian premier Abdullah Badawi, the current OIC chairman, in a speech opening the talks.
"The Security Council could not even muster the moral courage to condemn Israel for the attack on Qana or the killing of UN observers at Khiam," he said.
He also urged Muslim nations to offer troops for a multinational stabilisation force for Lebanon.
Several leaders talked of popular Muslim outrage
Pakistan's Prime Minister Shaukat Aziz said the failure to halt the violence was "adding to popular anger" and could have "incalculable consequences for long-term peace" in the Middle East.
He also called for all prisoners in the conflict - Lebanese, Palestinian and Israeli - to be returned.
The OIC's Secretary General, Ekmeleddin Ihsanoglu, said the Islamic world is "outraged" over international "double standards" on the Israeli offensive in Lebanon.
"I am afraid that the anger of the Muslim masses is being transformed into permanent hatred against the aggressors and their implicit and explicit protectors," he said.
Malaysia is also seeking support for an international commission to investigate what it describes as Israeli "war crimes".