Israel's military has continued its Gaza offensive, hitting hundreds of sites, including the Palestinian Prime Minister, Ismail Haniya's office.
Its army has also put 75,000 reserve troops on standby.
Hamas militants also continued to fire rockets into Israel, including one aimed at Tel Aviv that was intercepted by an Iron Dome system.
ITV News' Middle East Correspondent John Ray reports from Gaza.
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.