The attacks brought the death toll in Gaza to more than 300, according to Palestinian medical officials.
Israel says that its onslaught — its most ferocious against Palestinians in decades — is designed to prevent Palestinians from attacking towns in southern Israel with missiles. But a rocket fired from Gaza killed a man and wounded seven in the Israeli town of Ashkelon on Monday, the Israeli Army said. Three Israelis were also stabbed by a Palestinian in a Jewish settlement in the West Bank, the army said.
The air strikes followed bombing late Sunday that hit the Islamic University in Gaza, a Hamas stronghold, and a government ministry, according to Hamas. Footage recorded from Israeli warplanes showed bombs striking the entrances to tunnels allegedly used to smuggle weapons into Gaza from Egypt.
The Hamas-owned television station Al Aqsa was also hit, as was a mosque that the Israeli military said was being used as a terrorist base. Speaking in Parliament, Israeli Defense Minister Ehud Barak said that the attack in Gaza would be "widened and deepened as is necessary" and referred to its operations as part of Israel's long-term struggle against Israel's Islamist enemies, the newspaper Haaretz reported on its Web site.
"In order for the violence to stop, Hamas must stop firing rockets into Israel and agree to respect a sustainable and durable cease-fire," a White House spokesman, Gordon Johndroe, told reporters in Texas. "Hamas has once again shown its true colors as a terrorist organization."The United Nations Relief and Works Agency said more than 50 of those killed by Israeli strikes were civilians, Reuters reported. The agency based its assessment on visits by agency officials to hospitals and medical centers.
In a statement on Monday, the Israeli Army said some areas around Gaza had been declared a "closed military zone," a move which some analysts depicted as a potential precursor to a ground offensive. The military said the declaration meant that civilians, including journalists, could be denied access to an area up to two miles from Gaza.
On Sunday, Israeli troops and tanks massed along the Gaza border and the government said it had called up reserves for a possible ground operation.
A military spokeswoman, Major Avital Leibovich, said the closed zone around Gaza had mostly to do with concerns of safety. She said the military had information that Hamas may employ either suicide bombers or more powerful missiles from the border area and it wanted to clear the area. She said she was sure journalists would be permitted to return.
"No one is trying to hide anything," she said.
The continued airstrikes, which Israel said were in retaliation for sustained rocket fire from Gaza into its territory, unleashed a furious reaction across the Arab world, raising fears of greater instability in the region.
Much of the anger was also directed at Egypt, seen by Hamas and some nearby governments as having acceded to Israel's military action by sealing its border with Gaza and forcing back many Palestinians at gunpoint who were trying to escape the destruction.
Witnesses at the Rafah border crossing described a chaotic scene as young men tried to force their way across into Egypt, amid sporadic exchanges of gunfire between Hamas and Egyptian forces. Egyptian state television reported that one Egyptian border guard was killed by a Hamas gunman. A Palestinian man was killed by an Egyptian guard near Rafah, Reuters reported.
In Gaza, officials said medical services, stretched to the breaking point after 18 months of Israeli sanctions, were on the verge of collapse as they struggled to care for the more than 600 people wounded in two days.
At Shifa Hospital in Gaza City, women wailed as they searched for relatives among bodies that lay strewn on the hospital floor. One doctor said that given the dearth of facilities, not much could be done for the seriously wounded, and that it was "better to be brought in dead."
The International Committee of the Red Cross appealed on Sunday for urgent humanitarian assistance, including medical supplies, to be allowed to enter Gaza. Israeli officials said that some aid had been allowed in through one of the crossings. Egypt temporarily opened the Rafah crossing on Saturday to allow some of the wounded to be taken to Egyptian hospitals.
