North Korea and Vietnam have signed a series of agreements on increasing cooperation in fields ranging from health care and aviation to defense, raising the possibility that Hanoi seeks know-how from the DPRK’s troop deployment to Ukraine and weapons technologies.

The Korean Central News Agency (KCNA) reported on Saturday that top officials, including the foreign and defense ministers of both countries, attended a signing ceremony for the deals at Mansudae Assembly Hall in Pyongyang on Oct. 10.