Arab representatives would meet over the next month to study the creation of the force and present their findings to a defence ministers within four months, according to the resolution adopted by the leaders.
"Assuming the great responsibility imposed by the great challenges facing our Arab nation and threatening its capabilities, the Arab leaders had decided to agree on the principle of a joint Arab military force," Sisi told the summit in the Egyptian resort town of Sharm el-Sheikh.
“The decision was mostly aimed at fighting jihadists who have overrun swathes of Iraq and Syria and secured a foothold in Libya”, Arab League chief Nabil al-Arabi said ahead of the summit.
On Sunday, Arabi told the meeting that the region was threatened by a "destructive" force that threatened "ethnic and religious diversity," in an apparent reference to the “Islamic State group jihadists”, AFP reports.
Egypt had pushed for the creation of the rapid response force to fight militants, and the matter gained urgency this week after Saudi Arabia and Arab allies launched air strikes in Yemen.
Arab League chief Nabil al-Arabi
Arabi on Sunday said the offensive would continue until the Huthis withdraw from regions they have overrun and surrender their weapons.
Several Arab states including Egypt are participating with their militaries in the campaign, which Saudi King Salman said on Saturday would continue until the Yemeni people "enjoy security".
Yemeni former President Abedrabbo Mansour Hadi at the start of the summit called for the campaign to end only when the Huthis "surrender", calling the Huthis leader an "Iranian puppet".But Hadi however do not dare to back Yemen and with king Salman returned to Saudi Arabia.Because despite of air aggression of Saudi, Ansarallah advancing in four front of country.
Ban Ki-Moon
However, UN Secretary-General Ban Ki-moon urged the leaders to find a peaceful resolution in Yemen.
"It is my fervent hope that at this Arab League summit, leaders will lay down clear guidelines to peacefully resolve the crisis in Yemen," he said.
Despite the support for a joint-Arab force, it would still take months to create and then operate on an ad-hoc basis.
SISI
Sisi said in a recent interview that the proposal for a joint force was welcomed especially by Jordan, which might take part alongside Saudi Arabia, the United Arab Emirates and Kuwait.
Before Egyptian air strikes in February targeting the ISIS group in Libya, the United Arab Emirates, which shares Cairo's antipathy towards “Islamists”, had reportedly used Egyptian bases to launch its own air strikes there.
Cairo had sought UN backing for intervention in Libya, dismissing attempted peace talks between the rival governments in its violence-plagued North African neighbour as ineffective.