Arab ministers gave their backing on Saturday to Egyptian efforts to secure a truce that would end Israel's offensive on Gaza, said a statement after an Arab League meeting in Cairo.
It said Arab foreign ministers would form a delegation to travel to the Palestinian enclave in a show of support.
Arab League chief Nabil Elaraby told reporters he would lead the delegation and that the trip was expected to take place in the next "one or two days".
The statement condemned what it called Israeli "aggression".
Today's bombing in Tel Aviv is reminiscent of six years ago and could mark a serious escalation in the conflict.
A truce in Gaza suits all sides but none of the groups seem interested in a long-lasting solution.
A complex system of air defences has been instrumental in protecting Israel's population from incoming rockets.