The United Nations Security Council has 15 members, but five permanent members hold a special power: a negative vote from any one of them can block a substantive resolution even when the proposal has broad support.
The permanent five, or P5, are China, France, Russia, the United Kingdom and the United States.
How many votes are needed?
For a substantive Security Council decision to pass, it needs at least nine affirmative votes and no veto from a permanent member.
This creates two separate tests. A proposal with only eight “yes” votes fails even without a veto. A proposal with 14 “yes” votes can also fail if the remaining vote is a “no” from a P5 country.
Is an abstention a veto?
No. A permanent member can abstain and allow a resolution to pass if it still receives at least nine affirmative votes.
That distinction lets a government signal disagreement without blocking the Council entirely. An absence can also differ from a negative vote, though the political meaning depends on the circumstances.
Do procedural votes have a veto?
The Charter distinguishes procedural matters from other decisions. Procedural decisions require nine affirmative votes and are not subject to the permanent-member veto in the same way.
Disputes can arise over whether a question is procedural or substantive, which is one reason Council procedure can look complicated from outside.
Why do five countries have this power?
The UN's founders gave permanent status and veto power to five states considered central to the post-Second World War security order. The theory was that the organization could not enforce major peace-and-security decisions against a great power without risking its collapse.
Critics argue that the arrangement is unequal and can prevent action during wars or humanitarian crises. Supporters argue that the Council would lose practical relevance if major military powers were routinely outvoted on issues they considered vital.
Can the General Assembly override a veto?
The General Assembly can debate the issue, adopt recommendations and mobilize political pressure, but it cannot simply convert a vetoed Security Council resolution into a binding Council decision.
The UN Security Council voting guide explains Article 27 and the effect of an abstention. Continue with our global economy explainer or browse World.
