Gaza hospitals are being overrun with casualties from Israel's bombings and face critical shortages of drugs and medical supplies, the World Health Organization (WHO) said.
Officials in Gaza said 43 Palestinians, nearly half of them civilians including eight children, had been killed since Israel began its air strikes.Three Israeli civilians were killed by a rocket fired from the enclave on Thursday.
The UN health agency appealed for $10 million from donors to meet the need for drugs and supplies over the next three months.
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.