The former president of the Democratic Republic of Congo has appeared in public for the first time since being sentenced to death in absentia for treason and war crimes. Joseph Kabila was filmed Wednesday in Kenya’s capital Nairobi at a meeting attended by Congolese opposition leaders. Kabila and others oppose Congo President Felix Tshiseked and group signed a declaration establishing a new political movement. Congo's government has accused Kabila of collaborating with Rwanda and the Rwanda-backed rebel group M23. The group seized key cities in January in Congo's mineral-rich eastern region. Kabila’s appearance in Kenya is expected to trigger diplomatic protests by Congo’s government, which has previously accused Kenya of supporting M23.