Answer
Pierre Nkurunziza became president of Burundi in 2005, after serving as president of the Transitional Government of Burundi from 2001 to 2005. He was re-elected in 2010 and 2015, although the 2015 election was disputed by some observers. Nkurunziza's presidency has been marked by political instability and violence, and he has been accused of human rights abuses.