Israel unleashed new airstrikes on Gaza early on Tuesday, hitting the high-rise home of a Hamas field commander and two border tunnels dug by militants, as Hamas and other armed groups fired dozens of rockets toward Israel. It was an escalation sparked by weeks of tensions in contested Jerusalem. Since sundown Monday when the cross-border fighting erupted, 24 Palestinians - including nine children - were killed in Gaza, most by airstrikes, Gaza health officials said. The Israeli military said 15 of the dead were militants. During the same period, Gaza militants fired more than 200 rockets toward Israel, injuring six Israeli civilians. This was preceded by hours of clashes Monday between Palestinians and Israeli security forces, mainly in Jerusalem but also across the West Bank. More than 700 Palestinians were hurt, including nearly 500 who were treated at hospitals. The current violence, like previous rounds, was fueled by conflicting claims over Jerusalem, home to major holy sites of Islam, Judaism and Christianity. The rival national and religious narratives of Israelis and Palestinians are rooted in the city, making it the emotional core of their long conflict.