Israel will not halt its fire in Gaza until it finishes an operation aimed at destroying tunnels used by militants, a senior minister said on Tuesday.
As world efforts to broker a ceasefire in war-torn Gaza gathered speed, Israeli Justice Minister Tzipi Livni also ruled out any acceptance of the "unacceptable" demands laid out by Hamas as a condition for halting its fire.
She said the question of an immediate ceasefire with Hamas was not going to happen at this stage.
"First of all, it won't happen before we really finish the tunnels project which was laid out as a strategic objective," she told Ynet news website, referring to a major operation that started on the evening of July 17.
"Second, it won't happen in a way in which Hamas's completely unacceptable conditions are met, because it just won't," she said.
"Until now, Hamas is presenting demands that have no chance of being accepted by anyone - not by us, not by Abu Mazen, not by the Egyptians and not by the Americans," she said, referring to Palestinian president Mahmud Abbas.
Hamas officials have laid out a list of demands that must be met before agreeing to a truce - some involving Israel and others aimed at Egypt.
Central to its demands is that Israel lift its eight-year blockade on Gaza and release of scores of veteran Palestinian prisoners who had been released in a 2011 swap agreement but who were recently re-arrested.
It also wants the Rafah border crossing with Egypt to be opened, in a demand aimed at Cairo which has kept it largely closed since the overthrow in July 2013 of former president Mohamed Morsi, a key Hamas ally.