official peacekeeping mission by sending officers from the Vietnam People's Army. 2015 As part of its mandate to conduct human rights reporting, UNMISS released a report in mid-2015 on an alleged campaign of violence by the Sudan People's Liberation Army (SPLA) and associated armed groups in Unity State. The report cited witness accounts of abductions, rapes and people being killed and burned alive in dwellings. UNMISS continued to struggle to cope with the large populations of internally displaced people living within the 'Protection of Civilians' (PoC) sites in 2015. The mission was accused in May 2015 of failing to secure the perimeter of the Bentiu PoC site during an expansion of the site led by the International Organisation for Migration. 2016 Ban Ki-moon requested an independent investigation of the deployment be made following reports that on 11 July South Sudanese troops rampaged through the capital, killing and raping civilians and foreign aid workers. The event had occurred following three days of fighting between troops loyal to President Salva Kiir and soldiers aligned with former Vice President Riek Machar that resulted in the deaths of 300 civilians and two UN peacekeepers. Led by Patrick Cammaert, the investigation found that the force suffered from disorganization and a lack of leadership. Ban Ki-moon requested on 1 November that Lieutenant General Johnson Mogoa Kimani Ondieki, the Kenyan force commander, be replaced as soon as possible. The next day the Kenyan Ministry of Foreign Affairs accused the United Nations of using Ondieki as a scapegoat and announced that it would be withdrawing all of its forces from South Sudan. Head of UNMISS, Ellen Margrethe Løj, completed her assignment in November 2016 and was replaced by David Shearer. In 2016, the United Kingdom began Operation Trenton, a deployment of over 300 personnel to support UNMISS. It concluded in 2020. 2017 Japanese peacekeepers left South Sudan, ending five years of their mandate under UNMISS. The withdrawals were done in April 2017, followed by two withdrawals in May with Chief Cabinet Suga denying that it was made due to security matters. Their deployment was a part of the Abe government's efforts to promote new laws for Japanese peacekeepers to easily intervene, such as assisting fellow peacekeepers and civilians working under UNMISS mandate. The Japanese MOD is accusing of covering up the security situation in Juba. In December 2017, the mission closed down the first Protection of Civilian site