As a result of the Anglo-American drive to encircle and ultimately dismantle China and Russia, Moscow and Beijing have joined ranks and the SCO has slowly evolved and emerged in the heart of Eurasia as a powerful international body.
The main objectives of the SCO are defensive in nature. The economic objectives of the SCO are to integrate and unite Eurasian economies against the economic and financial onslaught and manipulation from the “Trilateral” of North America, Western Europe, and Japan, which controls significant portions of the global economy.
The SCO charter was also created, using Western national security jargon, to combat “terrorism, separatism, and extremism.” Terrorist activities, separatist movements, and extremist movements in Russia, China, and Central Asia are all forces traditionally nurtured, funded, armed, and covertly supported by the British and the U.S. governments. Several separatist and extremist groups that have destabilized SCO members even have offices in London.
Iran, India, Pakistan, and Mongolia are all SCO observer members. The observer status of Iran in the SCO is misleading. Iran is a de facto member. The observer status is intended to hide the nature of trilateral cooperation between Iran, Russia, and China so that the SCO cannot be labeled and demonized as an anti-American or anti-Western military grouping.
The stated interests of China and Russia are to ensure the continuity of a “Multi-Polar World.” Zbigniew Brzezinski prefigured in his 1997 book The Grand Chessboard: American Primacy and the Geostrategic Imperatives and warned against the creation or “emergence of a hostile [Eurasian-based] coalition that could eventually seek to challenge America’s primacy.”  He also called this potential Eurasian coalition an “‘antihegemonic’ alliance” that would be formed from a “Chinese-Russian-Iranian coalition” with China as its linchpin.  This is the SCO and several Eurasian groups that are connected to the SCO.