Dozens of intelligence corps reservists vowed to stop collecting information on Palestinians.
Israel is ready for a ground invasion in Gaza but says it prefers a diplomatic solution. Egypt also claimed a deal to end the fighting could be near.
Israeli aircraft bombed Hamas government buildings in Gaza on Saturday, including the prime minister’s office, after Israel’s cabinet authorised the mobilisation of up to 75,000 reservists, preparing for a possible ground invasion.
Israeli reservists prepared for war as the nation mourned victims of Gaza rockets and Benjamin Netanyahu warned of fierce retaliation for strikes at Tel Aviv and Jerusalem.