(Reuters) - For the 22nd consecutive year, Cuba will ask the United Nations to condemn the United States economic embargo against the island, a top Cuban official announced on Monday, accusing Washington of tightening sanctions in place for more than half a century.

U.S. President Barack Obama, who stated before taking office that he wanted to recast long-hostile U.S.-Cuba relations, has been a disappointment to the Cuban government, which expected him to do more to dismantle the embargo.