Vietnamese Party General Secretary To Lam, and Party General Secretary and President of Laos Thongloun Sisoulith on December 1 witnessed the exchange of bilateral cooperation documents between the two countries' ministries, agencies and localities, following their talks the same day.

General Secretary of the Communist Party of Viet Nam (CPV) Central Committee To Lam and First Secretary of the Communist Party of Cuba (CPC) Central Committee and President of Cuba Miguel Díaz-Canel Bermúdez witnessed the exchange of bilateral cooperation documents, following their talks in Ha Noi on September 1.