Since Hafez Assad's death in 2000, his son Bashar al-Assad reshuffled his cabinet several times to remove several long-time members. Sharaa, however, remained in office, and became one of the longest-serving foreign ministers in the world. It was believed that Sharaa might be forced to resign when, in October 2005, he was accused of misleading international investigators in letters about the investigation of possible Syrian involvement in the assassination of former Lebanese prime minister Rafik Hariri. Along with President Bashar al-Assad, Sharaa was interviewed in April 2006 during the course of a UN investigation into the death in February 2005 of former Lebanese Prime Minister Rafik Hariri.