HAVANA — A U.S. senator says the next round of negotiations on restoring full diplomatic ties with Cuba will take place next week in Washington.

He and other members of a Democratic congressional delegation to Cuba expressed guarded optimism Tuesday that the two sides would be able to resolve issues surrounding the reopening of embassies in Washington and Havana.

Mark Warner of Virginia, Claire McKaskill of Missouri and Amy Klobuchar of Minnesota made their first trip to Cuba over the weekend. Klobuchar is sponsoring a bill to lift the U.S. trade embargo on Cuba.

“We look with hope and expectations to the meetings next week in Washington between the Cuban government and the American State Department to make progress,” Warner told reporters in Havana Tuesday morning.

McKaskill said: “Frankly, I’m optimistic.”

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