The protection and shelter of millions of Afghans on Pakistan soil for over three decades has amplified the image of UNHCR as a humanitarian institution, which has worked along with the government of Pakistan to manage the burden of the largest caseload of refugees in the world. The office is credited with having carried out the largest repatriation of Afghans (approximately 3.6 million) to their home country since 2002. This operation has greatly enhanced the credibility and esteem of the UNHCR both within Pakistan and Afghanistan.