Israeli Prime Minister Benjamin Netanyahu on Tuesday threatened to teach Gaza's ruling Hamas movement a lesson "very soon" following a surge in militant rocket attacks on the Jewish state.

Since December 20, four Palestinians and an Israeli have been killed in violence in and around Gaza, with militant rocket fire sparking retaliatory air strikes by Israel.

Netanyahu has warned that Israel would not allow the intermittent rocket fire to turn into a deluge.

Another rocket at the weekend prompted an air strike on Gaza City on Sunday which wounded two Palestinians, one critically, with the military saying it had targeted a senior Islamic Jihad militant who was behind much of the rocket fire.

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