Answer
Pierre Nkurunziza was president of Burundi for nearly 15 years. He was first elected in 2005, and then re-elected in 2010 and 2015. In 2015, his third term was controversial, as many people argued that it was unconstitutional for him to run again. Nkurunziza's supporters argued that he was eligible to run again, as his first term was not a full term.