On Tuesday, President Ilham Aliyev officially approved the deal signed by Iranian and Azerbaijani officials back in April.
The agreement was ratified yesterday by the Parliament of Azerbaijan back in June.
In April and during President Ilham Aliyev’s trip to Iran, high-ranking officials from the two countries signed three memoranda of understanding and a cooperation agreement.
Azerbaijan and Iran have had diplomatic relations since 1918. Iran recognized Azerbaijan's independence in 1991, and diplomatic relations between the two countries were established in 1992.