Consensus-based multilateral forums both empower and constrain middle powers. Analyse with reference to India's refusal to endorse the SCO Defence Ministers' joint statement in 2025.

The Shanghai Cooperation Organisation (SCO) takes decisions by consensus, so one member can stop any joint text. At the June 2025 Defence Ministers' Meeting in Qingdao, India did not sign the joint document, and no statement was adopted [2][3]. The episode shows that consensus works for a middle power as a shield, not as a lever.

How consensus empowers India

• Veto over framing: India wanted its terrorism concerns reflected in the text. One member refused, so the document was not adopted [2]. A draft that India saw as diluted (it reportedly left out the Pahalgam attack) never became official SCO language.
• No outvoting: Sitting alongside China and Pakistan, India could not be outvoted into accepting the text. Jaishankar said India would not sign without a reference to terrorism [3].
• Principled signalling: Rajnath Singh told the meeting that "every act of terrorism is criminal and unjustifiable" [1].
• Agenda-setting through consistency: India repeated the line at Bishkek (2026), saying there is "no place for double standards" [4]. This builds a public record that India never accepted silence.

How consensus constrains India

• Blocking is not shaping: A veto stops bad wording but cannot insert India's own. The result was no shared counter-terror text at all [2].
• Mutual veto: "One country did not want to refer to terrorism" [3]. Rivals hold the same power, so the outcome is a stalemate.
• Lowest-common-denominator texts: General language passes easily, such as the Heads of State statement on Countering Radicalisation, issued during India's chairmanship [1]. Naming a sponsor does not pass.
• Image cost: Repeated refusals risk casting India as the member that obstructs outcomes.

Reassembling: the net balance Consensus gives India defensive power in an unequal forum but limits constructive outcomes. Way forward:

• Build new drafts on already-agreed SCO language [1], so that a member blocking them goes back on its own earlier word.
• Push an "ecosystem" framing (financing, safe havens, those who "abet and shelter") rather than naming a country [4].
• Link security commitments to the SCO's trade and connectivity agenda.

Qingdao shows that consensus protects a middle power's red lines but cannot by itself turn them into collective commitments. Patient, issue-based coalition-building inside the SCO, consistent with India's long-standing push for a Comprehensive Convention on International Terrorism at the UN, can turn this defensive veto into constructive influence for regional peace.