IMF warns Greece needs debt extension, may require writedown

The International Monetary Fund warned on Thursday that Greece would need an extension of its European Union loans and a potentially a large debt writeoff if it grows more slowly than expected and economic reforms are not implemented. The IMF warning in a preliminary draft of its latest debt sustainability report came as Greece readies for a Sunday referendum on an international bailout deal that Prime Minister Alexis Tsipras has urged voters to reject. The Washington-based institution, which is