RAFAH, Gaza Strip (AP) — Israeli war planes struck targets across Gaza, two airports in Syria, and a mosque in the occupied West Bank allegedly used by militants, as the two-week-old war with Hamas threatened to spiral Sunday into a broader conflict.

Israel has traded fire with Lebanon’s Hezbollah militant group since the war began, and tensions are soaring in the occupied West Bank where Israeli forces have battled militants in refugee camps and carried out two air strikes in recent days.

Prime Minister Benjamin Netanyahu told troops in northern Israel that if Hezbollah launches a war, “it will make the mistake of its life. We will cripple it with a force it cannot even imagine, and the consequences for it and the Lebanese state will be devastating”.

For days Israel has been on the verge of launching a ground offensive in Gaza following Hamas’s deadly October 7 rampage, with tanks and troops massed at the border.

Israel’s military spokesman, Rear Admiral Daniel Hagari, said the country had increased air strikes across Gaza to hit targets that would reduce the risk to troops in the next stage of the war.

Hamas said it fought with Israeli forces near Khan Younis in southern Gaza and destroyed a tank and two bulldozers.

Late Sunday Hagari announced that a soldier was killed and three others wounded during a raid inside Gaza as part of efforts to rescue more than 200 hostages abducted in the October 7 attack.

He said the soldiers were hit by an anti-tank missile. It was not immediately known if the soldiers were inside Gaza at the time.

On Saturday 20 trucks entered Gaza in the first aid shipment into the territory since Israel imposed a complete siege two weeks ago.

Israeli authorities said late Sunday they had allowed a second batch of aid into Gaza at the request of the United States.

COGAT, the Israeli defence body responsible for Palestinian civilian affairs, said the aid included water, food and medical supplies and that everything was inspected by Israel before it was brought into Gaza.

The United Nations agency for Palestinian refugees confirmed the arrival of 14 trucks.

Israel has not allowed any fuel to enter Gaza. Earlier, Associated Press journalists saw seven fuel trucks head north from the border. But the United Nations and Israel said those trucks were taking fuel stored on the Gaza side of the crossing deeper into the territory, and that no fuel had entered from Egypt.

In a sign of how precarious any movement of aid remains, the Egyptian military said Israeli shelling hit a watchtower on Egypt’s side of the border, causing light injuries. The Israeli military apologised, saying a tank had accidentally fired and hit an Egyptian post, and the incident was being investigated.

Relief workers said far more aid is needed to address the spiralling humanitarian crisis in Gaza, where half the territory’s 2.3 million people have fled their homes.