Hamas militants have launched dozens of rockets at Israel after Israeli air strikes killed senior commanders and felled another tower block in Gaza.
The escalation, which began on Monday, has triggered street violence in Israel between Jews and Israeli Arabs.
At least 67 people in Gaza and seven people in Israel have been killed.
The fighting erupted on Monday after weeks of rising Israeli-Palestinian tension in east Jerusalem which culminated in clashes at a holy site revered by muslims and Jews.
Prime minister Benjamin Netanyahu, speaking late on Wednesday night, said the government would use all its strength to protect Israel from enemies on the outside and rioters on the inside
Palestinian militants have been firing rockets into Israel since Monday night, and Israel has responded by hitting targets in the territory.
The Israel Defence Forces (IDF) said on Wednesday that their strikes on Gaza were the largest since the conflict in 2014.
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