Israel launched its largest offensive in the Gaza Strip in nearly two years, carrying out a blistering aerial assault on scores of targets and killing 25 people.
Officials called it an open-ended operation aimed at ending weeks of heavy rocket fire. As Gaza militants unleashed salvos on cities including Jerusalem and Tel Aviv, Israel mobilised forces along the border for a possible ground invasion.
The offensive set off the heaviest fighting between Israel and the Islamic militant group Hamas since an eight-day battle in November 2012.
The militants fired about 160 rockets at Israel, including a strike that reached the northern city of Hadera for the first time, while Israel said it attacked more than 150 sites across Gaza.
Palestinian medics reported at least 25 dead, including six killed in an airstrike that flattened an apartment building in southern Gaza and set off widespread panic.
Prime Minister Benjamin Netanyahu said continued rocket attacks on Israeli communities would not be tolerated.
“Therefore I have ordered the military to significantly broaden its operation against Hamas terrorists and against the other terrorist groups inside Gaza,” he said on national TV.
“I call on you to display patience because this operation could take time.”
Israel and Hamas are bitter enemies who have engaged in numerous rounds of fighting over the years. But until recently, they had been observing a truce that ended the previous hostilities in 2012.
Tensions have been rising since Palestinian militants kidnapped three Israeli teenagers in the West Bank on June 12.
Accusing Hamas of being behind the abductions, Israel launched a crackdown on the group’s members in the West Bank and arrested hundreds of people. Hamas, which controls Gaza, responded by stepping up rocket fire.
The situation deteriorated last week after the bodies of the Israeli youths were found, and a Palestinian teenager in Jerusalem was abducted and burned to death in what Palestinians believe was a revenge attack.
Six Jewish Israelis have been arrested in the killing, and the rocket fire from Gaza has increased in recent days.
The fighting raged throughout the day. In its fiercest attack, an airstrike flattened the home of a Hamas militant in the southern Gaza town of Khan Younis, reducing the concrete structure into a smouldering pile of rubble.
Palestinian medical officials said six people, including two children, were killed. Israel’s military said it had called the home shortly before the airstrike to warn civilians to leave.
The normally bustling streets of Gaza City were deserted late yesterday. Fearing an Israeli ground operation, many residents from areas near the border moved to stay with relatives living deeper inside Gaza.
In southern Israel, hundreds of thousands of citizens were ordered to stay close to home because of the rockets.
Israeli streets were also quieter in Tel Aviv and Jerusalem after attempted rocket strikes set off air-raid sirens in Israel’s two largest cities. The Jerusalem municipality said it was opening special bomb shelters.
Militants twice fired rockets at Tel Aviv, Israel’s commercial capital, sending people scurrying for cover. Both were intercepted by the “Iron Dome” rocket defence system, with the second shown on live TV, as a winding plume of smoke followed the interceptor into the black skies, culminating with a flash.
Late yesterday, Hamas said it fired four rockets toward Jerusalem, and two distant booms were heard from the city’s centre. Three rockets landed in the Jerusalem area, officials said, and police said there were no injuries.
The Israeli military said one rocket exploded in the northern Israeli city of Hadera, about 60 miles from Gaza, in the farthest distance a rocket from Gaza has reached so far. It caused no injuries, the army added.
With its new reach, Hamas’ rockets now have an estimated 5 million people – more than half of Israel’s population – in range.
Hamas said it had used a new rocket called the R-160 after one of its leaders, Abdel Rantisi, who was killed last decade.
In other violence, the Israeli military said it foiled Gaza militants who tried to infiltrate a military base in southern Israel by sea.
It said four attackers came ashore and attacked the base with grenades and automatic rifles before they were killed. An Israeli soldier was slightly wounded.
As Israel built up forces along the border, the government authorised the army to activate up to 40,000 reservists.
The army said that about 1,000 soldiers were immediately activated, in addition to an earlier group of 1,500 reservists called into action.
“If we need to go inside in a ground operation, then we will do it. These things are on the table. These options exist. We will not stop anything until the rocket firing ends,” said Yitzhak Aharonovitch, the minister for internal security. Israel’s last ground offensive was in 2009.
The US State Department condemned the rocket fire on Israeli civilians, defended Israel’s right to protect itself, and said it hoped Israel’s “strong message” would deter further attacks.
In Gaza, Abu Obeida, a masked spokesman for Hamas’ military wing, accused Israel of violating the 2012 agreement and demanded a halt to the airstrikes, its recent crackdown in the West Bank and its opposition to a Palestinian unity government that is backed by Hamas.