Twenty-four years after his fall from deputy prime minister to prisoner, Anwar Ibrahim of the multi-ethnic Pakatan Harapan (PH) alliance has been sworn in as Malaysia's 10th prime minister. He is the country's fourth prime minister since May 2018, and his predecessors' terms have been decreasing: 22 months, 18 months to 15 months. So, can Anwar last a full five.