India and Pakistan invited to join China and Russia in SCO security group

India and Pakistan began accession to a regional security group led by China and Russia on Friday after two days of summits that Russian President Vladimir Putin held up as evidence Moscow is not isolated in the world.

The Shanghai Cooperation Organisation (SCO), meeting in the Russian city of Ufa a day after the BRICS emerging economies held a summit there, said the invitation to the two Asian nations showed a "multipolar" world was now emerging.

Those words will have pleased Putin, who says the United States has an outdated vision of a "unipolar" world dominated by Washington and wants to show Russia has not been weakened by Western sanctions over its role in the Ukraine crisis.

"The evolution of the SCO is taking place at a complicated stage in the development of international relations and amidst the emergence of a multipolar world," the group said in a declaration after the meeting.

"These processes are accompanied by increasing security challenges and threats, increasing uncertainty and instability in various regions of the world," the declaration said.

The SCO, which also includes the Central Asian former Soviet republics of Kazakhstan, Uzbekistan, Kyrgyzstan and Tajikistan, is widely seen as a platform for Moscow and Beijing to project influence in the region.

Until now it has not been a big force and relations between China and Russia have not developed as quickly as Moscow would like, according to Western analysts, despite agreement on a major gas-supply deal last year.