US Secretary of State Hillary Rodham Clinton on Thursday said she planned to push South Africa to do more to counter what she called the "negative effects" of President Robert Mugabe on the reform process in Zimbabwe, according to dpa. Mugabe's Zanu-PF and Morgan Tsvangirai's Movement for Democratic Change (MDC) struck a deal in February to share power for the first time, but the MDC accuses Mugabe of not fulfilling his end of the bargain. "I intend to speak not only with President Zuma but other members of his government about what more ... can be done to strengthen the reform movement inside Zimbabwe ... and try to use its (South Africa's) influence to mitigate against the negative effects of the continuing presidency of President Mugabe," Clinton told journalists in the Kenyan capital Nairobi. New South African President Jacob Zuma recently pledged to intercede with Mugabe to resolve the power-sharing issues, but the US wants to see stronger action, according to dpa.