Tehreek Nifaz-e-Shariat-e-Muhammadi (Movement for the Enforcement of Islamic Sharia, or TNSM) was founded in 1988 by a radical Muslim cleric, Maulana Sufi Muhammad, with the single purpose of establishing Islamic law (Sharia) over parts of northern Pakistan, notably in the district of Swat in the North-West Frontier Province. TNSM later sent hundreds of jihadist fighters to aid the Taliban's resistance against the U.S. invasion of Afghanistan in 2001. After his return from Afghanistan, Sufi Muhammad was arrested and sentenced to seven years in prison; his son-in-law, Maulana Fazlullah, assumed control of TNSM and launched a guerrilla war against the Pakistan army and police in an effort to impose Sharia over the district, while at the same time running a parallel system of courts based on religious law. In 2009 the government reached an agreement with TNSM and Sufi Muhammad to impose a modified form of Sharia over the district of Swat, a development widely viewed as a capitulation by