The 2009 refugee crisis in Pakistan was the massive displacement of civilians in the Khyber Pakhtunkhwa of Pakistan that was caused by Operation Black Thunderstorm.
Since the beginning of Operation Black Thunderstorm against the Taliban, over 1.2 million people have been displaced in across Pakistan's Khyber Pakhtunkhwa, joined by a further 555,000 Pakistanis uprooted by fighting since August 2008. The refugees are known in Pakistan as Internally Displaced Persons (IDPs).
Most of the 1.2 million people who have escaped the violence were staying with relatives or friends, placing tremendous strain on the country, while over 300,000 others are seeking refuge in UNHCR-supported camps.[1]
By 22, August 1.6 million of 2.2 million returned home, as per UN estimates.[2]