James Longman reports from Beirut as rebel forces seize the presidential palace. Bashar al-Assad reportedly fleeing the country after nearly 14 years of bloody civil war with his government overrun in less than two weeks; Aaron Katersky reports on the latest in the United Healthcare CEO shooting, the new images of the suspect, as NYPD scours a central park pond for evidence; Mary Alice Parks has details on President-elect Trump's intentions to pardon the January 6th rioters on day one of his new administration, and his calls to investigate members of the Congressional Committee that held hearings on the riots; and more on tonight's broadcast of World News Tonight.