Chinese President Xi Jinping and Russia's Vladimir Putin are among the heads of state attending a Shanghai Cooperation Organization summit taking place in Kyrgyzstan.  Iran's president Masoud Pezeshkian is also in attendance, where he held bilateral talks with India's Narendra Modi.  Marking its 25th anniversary this year, the SCO has strengthened trade ties among its members as the bloc looks to present an alternative to the US-led world order.