President Obama has said that the US are "fully supportive" of Israel's right to defend itself from missiles being launched from Gaza.
Speaking at a news conference during a visit to Thailand, Mr Obama said "no country on earth would tolerate missiles raining down" on its people.
He added: "If we see a further escalation of the situation in Gaza, the likelihood of us getting back on any kind of peace track is going to be pushed off way into the future".
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.