The 53-year-old made a 45-minute speech live on YouTube on Friday evening from an unspecified location a day after the Senate lifted his immunity from prosecution. Joseph Kabila, the ex-president of the Democratic Republic of Congo, has lashed out at the government of his successor - calling it a "dictatorship". Analysts say any trial of Kabila could further destabilise the country, which has been battling the M23 rebellion since 2012. It all "testifies to the spectacular decline of democracy in our country", Kabila said. Rwandan troops are currently in DR Congo in support of the M23, which is led by ethnic Tutsis who say they took arms to protect the rights of the minority group.