More than half of Zimbabwe's population, suffering under a severe economic and political crisis, will need food aid in February and March, the World Food Programme said on Thursday. The WFP said in a statement that it aims to assist 5.1 million people in February while a group of U.S.-sponsored aid organisations plans to assist 1.8 million more people in the southern African country. "The overall total for people in need of assistance in February and March is around 7 million," the WFP said. [...] Regional leaders decided at a summit on Tuesday that a unity government should be formed next month. Fears of the cholera spreading in Zimbabwe have stepped up pressure on rival parties to end the political uncertainty. [...] Opposition leader Morgan Tsvangirai has said he agreed to form a government with President Robert Mugabe although his Movement for Democratic Change voiced disappointment with the deal reached at the summit. MDC officials are expected to meet on Friday to discuss how to proceed.