During his career, Tlass also became known for colorful language. In 1991, when Syria was participating on the Coalition side in the Gulf War, he stated that he felt "an overwhelming joy" when Saddam Hussein sent SCUD-missiles towards Israel. In August 1998, Tlass caused a minor uproar in Arab political circles, when he denounced Palestinian leader Yasser Arafat as "the son of sixty thousand whores." The long-standing conflict between the Assad government and the Palestine Liberation Organization would not end until after Hafez al-Assad's death in 2000.