A weekend of attacks and reprisals between Israelis and Palestinians has left at least 20 people dead. All of those killed were Palestinians. Most of those who died were said to be militants, but it is reported two, including a teenage boy, were civilians. Hospital sources in Gaza say 25 people were injured when an Israeli missile hit a house in northern Gaza. The violence erupted after militants fired rockets into Israel on Friday. There were no casualties in that attack, but Israel's response was swift and emphatic. Several members of Palestinian armed groups were killed in air strikes that followed, including one leader. Islamic Jihad and the Popular Resistance Committees say they have fired most of the 160 rockets that have targeted Israel since. Hamas says Egypt is talking to the factions involved, in an attempt to end this latest round of violence.