The Falah i Insaniat Foundation in Pakistan

Activists from the Falah-i-Insanayat Foundation (FIF) assist people displaced by fighting between the Pakistani army and Taliban fighters in Swat Photograph: Declan Walsh

FIF activists offers food, medical care and transport to villagers fleeing into Mardan district Photograph: Declan Walsh

FIF offers aid in Mardan district, where authorities are struggling to cope with an influx of more than 500,000 people Photograph: Declan Walsh

But FIF, according to experts, officials and some of its members, is the renamed relief wing of Jamaat-ud-Dawa, a group the Pakistani government banned last December after the UN declared it a terrorist organisation Photograph: Declan Walsh

Major General Tariq Khan, head of Pakistan's frontier corps, talks to the Guardian about operations against the Taliban and al-Qaida in the tribal belt and Swat valley Photograph: Declan Walsh

Refugees from Buner, Dir and Swat districts try to register amid chaotic scenes at a reception centre for internally displaced people in a hospital in Mardan Photograph: Declan Walsh

Refugees from Iley village, Buner district, take refuge in a half-built house in an upmarket suburb of Mardan city after fleeing the fighting Photograph: Declan Walsh

Those fleeing the fighting in Buner district wait at the reception centre of a Mardan hospital Photograph: Declan Walsh

The fighting is displacing hundreds of thousands of people, many of whom are trying to register at refugee centres Photograph: Declan Walsh