“The United States has been clinging to a policy that was not working,” said Obama, speaking against the isolation of Cuba despite opposition from Republicans in Congress. As both countries prepare for the opening of embassies on July 20, there are several issues that must be resolved in order to fully normalize relations, such are the closure of the U.S. naval base at Guantanamo Bay and the lifting of the blockade against Cuba, which Obama has recommended to Congress. teleSUR