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By David Chance WASHINGTON (Reuters) - The International Monetary Fund warned in a communique on Saturday that while economic growth in developed countries had strengthened, some emerging nations were being hit by weaker commodity prices and exports. With the United States poised to hike interest rates, the IMF member nations said it was essential that moves to "policy normalization" were accompanied by effective communication of changes to reduce risks of spillovers. "The possibility of lower growth potential is becoming a more relevant challenge over the medium term," the IMF's steering committee said in a communique during the Fund's spring meetings in Washington. Those meetings conclude on Sunday and have taken place amid growing concerns cash-strapped Greece will fail to reach agreement with its European Union and IMF creditors.
SANAA, Yemen (AP) — Militiamen loyal to Yemen's exiled president besieged an air base Saturday once crucial to the U.S. drone program targeting al-Qaida militants in the country, trying to dislodge the Shiite rebels holding the complex, a spokesman said.