Visiting North Korean Foreign Minster Ri Yong-hu met Iranian President Hassan Rouhani on Wednesday on the second day of his official trip to Tehran.
According to Iranian state TV, Rouhani said at the meeting that Iran backs complete peace and security in the Korean peninsula.
He was quoted as saying that Tehran seeks comprehensive expansion of ties in all areas with Pyongyang.
According to the TV report, Rouhani also talked about the unilateral withdrawal of the United States from the nuclear accord and said that America's behavior recently means it is now being recognized by the world as an unreliable and untrustworthy country.
He added that given the current circumstances, countries with friendly relations must stand by each other in the international organizations.
The state TV report also quoted the North Korean Foreign Minister as saying that his country's strategic policy is widening ties with Iran and confronting unilateralism.
Ri described the US withdrawal from the nuclear deal with Iran as incorrect and in contradiction to international regulations.