Samarkand, Sep 16 (IANS): Iran has signed a memorandum paving the way to transition from its current observer status to full membership in the Shanghai Cooperation Organisation (SCO), RT reported.

The Middle-Eastern nation, which the US has long sought to undermine with diplomatic isolation and economic sanctions, made a formal step on Thursday to become the ninth member of the organization. Among the SCO's heavyweights are Russia and China, two major powers that are on Washington's list of geopolitical opponents.

The SCO was created in 2001 as an intragovernmental forum aimed at fostering trust and developing economic and humanitarian ties in Asia.

It currently has eight permanent members: China, India, Kazakhstan, Kyrgyzstan, Russia, Pakistan, Tajikistan and Uzbekistan. The last is currently hosting the annual summit of the leaders of the member states in the city of Samarkand.

Iran has been an SCO observer since 2005. Its delegation to the summit is headed by President Ebrahim Raisi, who met with senior Uzbek officials on Wednesday.

The memorandum, which spells the commitments that Tehran will undertake to become an SCO member, was signed by Iranian Foreign Minister Hossein Amir-Abdollahian and SCO Secretary-General Zhang Ming, the host country's foreign ministry reported, RT reported.

Yury Ushakov, a foreign affairs advisor to Russian President Vladimir Putin, said earlier this week that Iran could qualify for being upgraded to full membership before next year's SCO summit in India.

Uzbek President Shavkat Mirziyoyev touted this year's event as a turning point for the organization.

He cited the rapidly growing interest of nations in closer involvement with the SCO and said that it served as an example of how a "deep crisis of trust at the global level" can be overcome by parties willing to do so. He also stressed the scale of the group, which accounts for roughly half of the world's population and a quarter of global GDP.