According to IRNA, the Vietnamese president, who arrived in Mozambique on Friday evening, is scheduled to leave Mozambique for Tehran after winding up his visit to the African capital.
The presidents of Iran and Vietnam met in Jakarta last April on the sidelines of the 2nd Asian-African Conference Summit.
Now as the Western sanctions on Tehran are lifted, the three-day visit to Tehran by the Vietnamese president can be of special significance to help the enhancement of ties.
Truong Tan Sang is to confer with his Iranian counterpart Hassan Rouhani and other Iranian officials on economic, financial and banking relations as well as cooperation in oil and gas.
Trade between Iran and Vietnam shrank during the sanctions times amounted to $106.7 million last year, $77.2 million of which was Vietnam's exports to Iran.