Officials in Gaza have said that at least 43 Palestinians have been killed since Israel began its air strikes on Wednesday.
Three Israeli civilians were killed by a rocket on Thursday.
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.