Israel is still mourning the deaths of 21 Israel Defense Forces soldiers killed in Gaza Monday. Despite those deaths‚ Israeli leaders pledge to continue the war to defeat Hamas.   IDF Chief of Staff Herzi Halevi visited the site Tuesday where the soldiers died. Hamas terrorists fired RPG's at the building where the soldiers were setting explosives. "We‚ as always‚ will investigate the incident in depth and learn the lessons while fighting‚ so that such an incident will not...