Gaza City (Gaza Strip): Israel unleashed new airstrikes on Gaza early Tuesday, hitting a pair of high-rise buildings believed to be housing militants, as Hamas and other armed groups bombarded southern Israel with hundreds of rockets.
The conflict escalated relentlessly throughout the day, and Israel vowed that its strikes would only increase.
The latest exchange of fire was sparked by weeks of tensions in contested Jerusalem.
Since sundown Monday, 26 Palestinians including nine children and a woman were killed in Gaza, most by airstrikes, Gaza health officials said. The Israeli military said at least 16 of the dead were militants.
During the same period, Gaza militants fired hundreds of rockets toward Israel, killing two Israeli civilians and wounding 10 others.
But Israeli Prime Minister Benjamin Netanyahu warning in the evening that more was coming. He said after meeting with senior defense officials that Israel would increase even more the strength of the strikes and also the rate of the strikes against Hamas and Islamic Jihad militants in the Gaza Strip.
Hamas will receive blows now that it didn't expect, he said in a statement.
In a further sign of rising tensions, Israel signaled it is widening its military campaign. The military said it is sending troop reinforcements to the Gaza border and the defense minister ordered the mobilization of 5,000 reserve soldiers.
Even as the two sides ramped up tensions, officials said Egypt was working on brokering a cease-fire.
The barrage of rockets and airstrikes was preceded by hours of clashes between Palestinians and Israeli security forces, including dramatic confrontations at Jerusalem's Al-Aqsa Mosque compound, a sacred site to both Jews and Muslims.
The current violence, like previous rounds, including the last intifada, or uprising, has been fueled by conflicting claims over Jerusalem, which is at the emotional core of the long conflict.
In a sign of widening unrest, hundreds of residents of Arab communities across Israel staged overnight demonstrations denouncing the recent actions of Israeli security forces against Palestinians. It was one of the largest protests by Palestinian citizens in Israel in recent years.
Israel and Hamas, an Islamic militant group that seeks Israel's destruction, have fought three wars and numerous skirmishes since Hamas seized control of Gaza in 2007.