The United States has expelled two Cuban diplomats and placed tighter restrictions on everyone working at Cuba’s United Nations mission. The State Department accused the diplomats of conducting “activities harmful to U.S. national security,” but provided no details on what they did. Cuban Foreign Minister Bruno Rodríguez said the move was “categorically unjustified.” Meanwhile, a severe fuel shortage in Cuba has entered its second week. The Cuban government says the crisis is a result of U.S. sanctions against Cuba and Venezuela.