The Hamas leader Khaled Meshaal has said that Israel must concede "specific demands" in return for a truce that he said the Israeli government was seeking.
At a new conference in Cairo, he said Israeli must halt what he described as its "aggression" towards the Gaza Strip and lift the blockade of the Palestinian territory:
We are not against calm [a truce] ... but there must specific demands ... the Israeli thuggery and aggression stop ... and the siege on Gaza be lifted ...
They [Israel] attacked and they requested the calm because their calculations failed".
Israel denies its prime minister has requested a truce.
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.