Vietnam's president will visit Australia for the first time since he took office in April. (Lukas Coch/AAP PHOTOS)Vietnam's president will visit Australia for the first time since he took office in April. (Lukas Coch/AAP PHOTOS) Credit: AAPVietnam's president is set to visit Australia for the first time. Official trade talks will occur when Mr Lam arrives in Canberra on Tuesday. Two months after the agreement was signed, Mr Lam took office in Hanoi and has continued his country's international trade efforts.