Cuba and the U.S. officially resumed diplomatic relations after 54 years. The leftist FARC rebels of Colombia released a soldier they had held for nearly two weeks. Tens of thousands of Nicaraguans took to the streets across the country to commemorate the 36th anniversary of the Sandinista revolution. As residents in the state of Sinaloa celebrated Joaquin "El Chapo" Guzman's escape, officials said the prison where the drug lord was held had turned off motion sensors enabling the construction of the tunnel he escaped through. Greek banks reopened after three weeks of shutdown by the government as a measure to avert a crash in the financial system.