The United States and Cuba have re-established full diplomatic relations. It is the first time in 54 years that each side officially recognizes the other.
Early Monday morning, the flag of Cuba was raised at the headquarters of the State Department in Washington. The Cuban flag joined the flags of the other countries that have relations with the United States.
The re-establishment of ties is not without its critics. U.S. Senator Marco Rubio has said there has not been enough discussion of human rights in Cuba. Mr. Rubio belongs to the Republican Party.
