An Indonesian court officially declares Jemaah Islamiyah (JI) an illegal organization. JI is believed to be al-Qaeda’s main affiliate in Southeast Asia. The Indonesian government had previously refused to ban JI, even though it supported a United Nations ban on JI shortly after the 2002 Bali bombings (see October 12, 2002 and October 24, 2002). This court decision takes place during a trial of two high-ranking JI leaders, Zarkasih and Abu Dujana, both of whom were arrested the year before. Both are sentenced to 15 years in prison for supporting terrorist activities. Counterterrorism expert Rohan Gunaratna calls the decision “a huge victory against terrorism.” He adds: “This will have a direct impact on the leadership of JI, the most lethal terrorist group in Southeast Asia. Unless a terrorist was about to commit an attack, or had committed an attack, the Indonesian police couldn’t arrest them. Today if anyone is distributing propaganda and that person is linked to JI, that person can be arrested.” [Sydney Morning Herald, 4/22/2008]