srael is threatening to launch a ground invasion of the Gaza Strip after breaking an informal ceasefire with an ongoing series of deadly attacks. At least 13 Palestinian civilians have been killed, including a baby and a mother pregnant with twins, in addition to more than 100 wounded. Israel says it has launched the strikes to prevent Palestinian rocket fire, but the latest round of violence began last week when Israeli troops killed a young boy in Gaza. The situation has escalated since Saturday, when Palestinian militants fired at an Israeli military vehicle near the Israel-Gaza border. After Palestinian militant groups agreed to an informal truce on Monday, Israel broke two days of quiet with Wednesday's attack. Israel's attack on Gaza marks its largest since the U.S.-backed operation that killed more than 1,300 Palestinians nearly four years ago. We go to Gaza City to speak with Palestinian journalist Mohammed Omer.