President Barack Obama announced a move to normalise relations between the United States and Cuba on Wednesday, saying it is time to "cut loose the shackles of the past."

In a speech at the White House, Obama said the thaw in relations after a five-decade freeze is being made after he determined the "rigid" and outdated policy of the past failed to have an impact on Cuba.

"Today we are making these changes because it is the right thing to do. Today America chooses to cut loose the shackles of the past, so as to reach for a better future, for the Cuban people, for the American people, for our entire hemisphere, and for the world," he said.

He said the new policy will make it easier for Americans to travel to Cuba. Obama said he would also talk to members of the US Congress about lifting the US embargo on Cuba.