Foreign Minister Murray McCully told the United Nations Security Council that its future credibility and effectiveness depended on its permanent members making progress on reform, especially on its record in preventing conflict.
"There is something wrong when we are spending over $8 billion per year on peace-keeping but virtually nothing on the responsibility to prevent situations escalating into intractable conflict," he said in New York early this morning.
Mr McCully delivered his statement during his first session on the Security Council since New Zealand's two-year term began on January 1.
He was attending a debate on the maintenance of international peace and security, an initiative by China to mark the council's 70th anniversary.
China is among the five permanent members - others are the United States, Russia, France and Britain.