The U.S. and Cuba sure know how to hold a grudge. When Fidel Castro came to power in 1959, relations between the two countries quickly devolved into bitter arguments, political grandstanding and the occasional international crisis. And while Cuba lies less than 100 miles (160 km) off the coast of Florida, the two nations have had no diplomatic relations since 1961 and use Switzerland as a mediator whenever they need to talk. But maybe — finally — things might change. On April 13 President Barack Obama announced that he would lift some longstanding restrictions, allowing Cuban Americans to visit and send remittances to their families and easing — but not removing — the 47-year-old economic embargo on the island nation. (Read "Will Obama Open Up All U.S. Travel to Cuba?")