Oyun-Erdene Luvsannamsrai is expected to call a vote of confidence this week after questions were raised over his family’s wealth

The political direction of mineral rich Mongolia is to be put to the test, with the country’s prime minister expected to call a vote of confidence in his premiership, amid claims that allegations swirling about his son’s lavish lifestyle are being exploited to push the country back to authoritarianism.

Mongolia has been an outpost of parliamentary democracy since 1992, uneasily squeezed between superpowers Russia and China.