On 21 January 2012, the Assembly of Representatives of Yemen approved the immunity law. It also nominated Vice President Hadi as its candidate for the upcoming presidential election. Saleh left Yemen on the next day to seek medical treatment in the United States, and is reportedly seeking exile in Oman. A presidential election was held in Yemen on 21 February 2012. With a report claims that it has 65 percent of its turnout, Hadi wons 99.8% of the vote. Abd Rabbuh Mansur al-Hadi was sworn in as president of Yemen on 25 February 2012, officially removing Saleh from power, who has ruled the country for 33-years. Saleh returned home at the same day to attend Hadi's presidency inauguration. A five-day ceasefire proposed by Saudi Arabia was accepted by the Houthis and their allies in the military on 10 May 2015. The ceasefire was intended to allow the delivery of humanitarian aid to the country. The temporary truce began on the night of 12 May to allow the delivery of food, water, medical, and fuel aid throughout the country. On the fourth day of the truce, the fragile peace unraveled as fighting broke out in multiple southern governorates. At least three civilians in Aden and 12 in Taiz were killed on 16 May, despite the ceasefire. Agence France-Presse reported that "dozens" were killed in southern Yemen by the clashes, including 26 Houthi and 12 pro-Hadi fighters. Around this same time in 2015 reports surfaced in the media suggesting that Oman, which is the only Middle Eastern Monarchy not taking part in the coalition and has a border with Yemen, has presented a 7-point plan to both Iran and Saudi Arabia. Oman has played a vital role as a bridge between Tehran and the West in the past to help in the nuclear negotiations and thus enjoy good relations with Iran as well as its GCC neighbors. It has also been suggested that Oman was responsible to mediate a 24-hour ceasefire although analysts doubt if Oman can help bring about more rigid negotiations. The following parts constituted the planned initiative: The UN Mission to Support the Hodeidah Agreement, is initiated by the United Nations in Yemen.