Tsvangirai set to become Zimbabwe's PM

Zimbabwe's opposition leader Morgan Tsvangirai is set to become prime minister Wednesday, joining President Robert Mugabe in a unity government after a decade of struggling to push him from power. Tsvangirai's decision to bring his Movement for Democratic Change (MDC) into the unity government has raised doubts overseas and sparked fierce debate within his own party.

Now he is set to take office at 11:00 am (0900 GMT) and then head to a stadium to address his supporters, a speech that will celebrate but also need to reassure.The former union leader is all too aware of the concerns that he, like earlier Mugabe rivals, could be swallowed into the long-ruling ZANU-PF party without changing the course of a nation that is by any measure disintegrating.

"The sceptics must understand why we have done this and what is the best course of action to address the questions and challenges of transition in this political environment," Tsvangirai said on the eve of his swearing-in."We have made this decision and we made it without being forced. We want our colleagues in the country and outside the country to approach it from that perspective. It is our decision. Let history be the judge of this decision," he said.

His swearing-in will cap nearly a year of turmoil that began last March, when Tsvangirai won a first-round presidential vote that was greeted with nationwide political violence, mostly against his supporters.Hoping to end the unrest that left at least 180 dead, Tsvangirai pulled out of the run-off and left Mugabe to claim a one-sided victory denounced as a sham overseas.South Africa brokered the unity deal, which was signed on September 15 but stalled amid protracted talks on how to divide cabinet posts and share control of the security forces.