<span style="color: #222222;">Militants in Gaza fired fresh rocket barrages at Israel today in a deadly escalation that has seen Israel respond with waves of strikes. The latest flare-up came with Hamas that rules the blockaded Gaza Strip, seeking further concessions from Israel under the ceasefire.</span><br />'' <br />'' <span style="color: #222222;">Gazan authorities reported four Palestinians killed in Israeli strikes in the escalation that began yesterday. However,Israel disputed their account of the deaths of a pregnant mother and her baby.</span><br />'' <br />'' <span style="color: #222222;">Israel said 430 rockets had been fired from the Palestinian enclave since yesterday and its air defences intercepted many of them. The Israeli army said its tanks and planes hit some 200 militant targets in Gaza in response.</span><br />''