prime minister najib razak will announce mea-sures to expand the economic role of majority ethnic malays, signalling a reversal of earlier pledges to roll back affirmative action policies that critics say have done little except entrench corruption and business cronyism. the an-nouncement comes as mr najib faces a ruling party leadership contest next month. lt also follows an election in may in which his barisan nasional (bn) coalition, in power since 1957,was overwhelmingly rejected dy minority ethnic chinese voters. the new initiatives would cover equity ownership, "human capital" and social and economic development.