The Communist Party of Cuba sent a congratulatory message to the North Korean leader on Tuesday, North Korea’s state news agency reported on Wednesday, despite Havana’s diplomatic normalization with the U.S. in 2014.

Other communist parties around the world sent the letters on the occasion of the Seventh Party Congress in Pyongyang. The event ended on May 9, designating Kim Jong Un as chairman of the Workers’ Party of Korea (WPK).

“It expressed firm belief that the WPK and the Communist Party of Cuba would further strengthen the fraternal bonds and cooperation between the two countries on the road of