US President Barack Obama speaks to the press outside the Oval Office at the White House in Washington, DC, on July 21, 2014. US Secretary of State John Kerry is to push for an immediate ceasefire in Gaza when he arrives later Monday in Cairo, President Barack Obama said. "Israel has already done significant damage to Hamas's terrorist infrastructure in Gaza," Obama said in a statement at the White House, adding he had sent his top diplomat to the region to "push for an immediate cessation of hostilities." AFP PHOTO/Jewel Samad        (Photo credit should read JEWEL SAMAD/AFP/Getty Images)