U.S. government officials joined health experts from throughout the Americas at an Ebola conference in Cuba on Wednesday, the latest show of cooperation between the historic adversaries on fighting the disease. The meeting organized by ALBA, a bloc of leftist-governed countries, aims to coordinate a regional strategy on the prevention and control of Ebola, which has killed about 5,000 people in West Africa but in the Americas has only reached the United States. U.S. military personnel and Cuban medical specialists are already posted in West Africa and prepared to work side by side if needed, officials have said, and Washington...