A third round of negotiations over the restoration of full diplomatic relations ended after a day of talks, Cuban and U.S. officials said Tuesday. Hours later, Cuban President Raul Castro delivered a toughly worded attack on the United States for levying a new round of sanctions on his country’s closest ally, Venezuela.

Neither Cuba nor the U.S. provided details on whether progress was made toward a deal on reopening embassies in Washington and Havana.