Explosions again light up the sky in Gaza..despite a plea for peace from the UN. For more than three weeks, Israel's military has been pounding Palestinian buildings in response to rocket attacks by Hamas militants. The now familiar sound of Israeli artillery and tank shelling fills the air. But these overnight attacks were the most widespread throughout the offensive. Here, clouds of smoke fan the horizon, as an Israeli strike targets Hamas broadcast outlets, Al-Aqsa TV and Al-Aqsa Radio.