US prepared to broker Gaza ceasefire, says Obama
President Barack Obama has said The US is prepared to broker a ceasefire between Israel and Palestinian militants in Gaza.
His comments came during a phone conversation with Israeli Prime Minister Benjamin Netanyahu.
Netanyahu earlier said Israel's operation was progressing as planned and "more stages were expected".
More than 80 Gazans have been killed since Israel's operation began on Tuesday, Palestinian officials say.
Israel says it hit more than 100 targets in Gaza on Thursday, while Palestinian militants have continued to fire rockets into Israel.