Israeli air strikes killed six Hamas militants in the Gaza Strip on Monday, the Islamist group said, in the deadliest attacks in a surge of violence exacerbated by the kidnapping and killing of three Israeli youths and a Palestinian teen.

Palestinian militants kept up their now-daily rocket launchings into Israel as pressure mounted from hardliners in Prime Minister Benjamin Netanyahu’s coalition for tougher action against Hamas, the dominant force in the Gaza Strip.

The Israeli military said its aircraft targeted “terror sites and concealed rocket launchers” in the enclave. It said about 10 rockets hit southern Israel on Monday, wounding one soldier. […]