Israel's President Shimon Peres (C) and Prime Minister Benjamin Netanyahu (C, back) greet family members of the former Israeli prime minister Ariel Sharon at the start of a memorial ceremony at the Knesset, Israel's parliament, in Jerusalem January 13, 2014. Israel beefed up security for former Sharon's funeral near the Gaza border on Monday and warned the enclave's Palestinian rulers not to allow rocket fire during the ceremony, whichUS Vice President Joe Biden will attend. [Photo/Agencies]