US, Britain warn of risks of Israeli ground war - Article Photos 5/6

Israeli soldiers gather with their armored personnel carriers in a gathering area near the Israel Gaza Strip border, in southern Israel, Sunday, Nov. 18, 2012. President Barack Obama on Sunday defended Israel's airstrikes on the Gaza Strip, but he warned that escalating the offensive with Israeli ground troops could deepen the death toll and undermine any hope of a peace process with the Palestinians. (AP Photo/Ariel Schalit)