Malaysia's Najib Faces Leadership Test in By-elections

Malaysian Prime Minister Najib Razak faces a test of his popularity this week in two by-elections that come hard on the heels of calls by the country's former long-time leader, Mahathir Mohamad, for him to step down.
The influential, 89-year-old, Mahathir, has intensified attacks on Najib in recent weeks, criticising him for his management of the economy and scandals arising from debt-laden state fund 1MDB and the murder of a Mongolian model nine years ago.