HARARE (Reuters) –Zimbabwe will hold presidential and parliamentary elections on July 30, President Emmerson Mnangagwa said a vote he promises will be free and fair after the ouster of 94-year-old strongman Robert Mugabe. Mnangagwa pursues a promised break with Mugabe’s repressive policies while urging foreign investors to return to Zimbabwe. Missing from the July ballot for the first time in 20 years will be foremost political gladiators, Mugabe and Morgan Tsvangirai, the longtime opposition Movement for Democratic Change (MDC) leader who died of cancer in February.