The Cuban Interests Section is seen in Washington, July 1, 2015. The United States and Cuba are set to announce the restoration of diplomatic relations on Wednesday, the result of a two-year courtship between former Cold War rivals who severed ties in 1961. The chief of the U.S. interests section in Havana will report to Cuban foreign ministry around 9 a.m. (0900 ET) to deliver a letter from U.S. President Barack Obama to Cuban President Raul Castro. REUTERS/Gary Cameron