In his law practice, he is best known for bringing the case of Victims of Sabra and Shatila v. Ariel Sharon et al., under the law of universal jurisdiction in Belgium, where his clients won a judgment on 12 February 2003 against the accused before a change in Belgian law removed the jurisdiction of the court.[1] Other cases he pursued included one against Saddam Hussein, who was the object of an international campaign initiated in 1995 by Mallat with officials in Kuwait, London and Washington that developed into INDICT, a nongovernmental organisation he helped found in Britain in 1996. By 1998, INDICT had received open support in the American Congress and in the British Parliament, and was embraced by then US President Bill Clinton and British Prime Minister Tony Blair.[2] The campaign laid the ground for a case against Saddam Hussein in Belgium in 2002, and his eventual trial in Iraq in 2005.