<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2010) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2010) (Learn how and when to remove this template message) </Td> </Tr> <P> The United Nations Security Council "veto power" refers to the power of the permanent members of the United Nations Security Council (China, France, Russia, United Kingdom, and United States) to veto any "substantive" resolution . A permanent member's abstention or absence does not prevent a draft resolution from being adopted . However, the veto power does not apply to "procedural" votes, as determined by the permanent members themselves . A permanent member can also block the selection of a Secretary - General, although a formal veto is unnecessary since the vote is taken behind closed doors . </P> <P> The unconditional veto possessed by the five governments has been seen by critics as the most undemocratic character of the UN . Critics also claim that veto power is the main cause for international inaction on war crimes and crimes against humanity . However, the United States refused to join the United Nations in 1945 unless it was given a veto . The absence of the United States from the League of Nations contributed to its ineffectiveness . Supporters of the veto power regard it as a promoter of international stability, a check against military interventions, and a critical safeguard against U.S. domination . </P>

How many members of the un have veto power
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