Palestinian Prime Minister Rami Hamdallah, center, attends the first cabinet meeting of the Palestinian unity government in Ramallah, West Bank, June 3, 2014. Palestinian President Mahmoud Abbas swore in the Fatah-Hamas national unity government Monday, ending a seven year split with Hamas. The United States said they will work with the new government, while the Israeli government is threading retaliation. UPI/Debbie Hill