Fears of Middle East war grow after Hamas leader's killing

Middle East tensions soared as Iran and its allies readied their response to the assassination of Hamas's political leader, blamed on Israel, spurring fears of a regional war.

Israel ally the United States said it would move warships and fighter jets to the region, while Western governments called on their citizens to leave Lebanon — where the powerful Iran-backed Hezbollah movement is based — and airlines cancelled flights.

The killing this week of Hamas leader Ismail Haniyeh in Tehran, hours after the Israeli assassination of Hezbollah's military chief in Beirut, has triggered vows of vengeance from Iran and the so-called "axis of resistance".

Iran-backed groups from Lebanon, Yemen, Iraq and Syria have already been drawn into the nearly 10-month war between Israel and Palestinian militant group Hamas in Gaza.

Israel on Saturday again traded fire with Hezbollah, carried out a deadly raid in the occupied West Bank, and struck a school compound in Gaza City in an attack that the Hamas-ruled territory's civil defence agency said killed at least 17 people.

Numerous schools turned into displacement shelters have been hit across Gaza in recent weeks, with Israel insisting the facilities had been used by militants. Hamas denied using civilian infrastructure for military activities.

Haniyeh was buried on Friday in Qatar, where he had been based. Israel, accused by Hamas, Iran and others of carrying out the attack, has not directly commented on it.

Iran said on Saturday it expects Hezbollah to hit deeper inside Israel and no longer be confined to military targets.

The Pentagon said it was bolstering its military presence in the Middle East to protect U.S. personnel and defend Israel.

It said an aircraft...