Cuba's new president Miguel Diaz-Canel arrived in Moscow earlier this month to meet with Putin regarding economic issues and arms purchase. He then met with Kim Jong Un in NK. Diaz-Canel was to leave Pyongyang and visit China, Vietnam and Laos.
Additionally, Cuba is in the process of revising its constitution.
https://www.foxnews.com/world/cuban-president-meets-north-koreas-kim-jong-un-in-Pyongyang
https://www.aljazeera.com/news/2018/11/cuba-president-set-meet-putin-moscow-economic-talks-181101171213394.html
https://www.aljazeera.com/news/2018/11/dawn-cuba-draft-constitution-explained-181111192818890.html