The Prime Minister says he will make a final push at the Nuclear Security Summit in the Hague for a seat on the United Nations Security Council.
The Government is bidding for the seat for the 2015-16 term, with the vote to be held in October this year.
John Key says he will use the summit to lobby leaders for their vote. He says the Government is getting into the finishing line of its campaign and he hopes New Zealand will be selected ahead of Turkey and Spain.
Mr Key is among 53 leaders and four international organisations at the summit, which aims to secure nuclear materials and reduce the global threat of nuclear terrorism.
He says progress is being made in securing nuclear materials and reducing the global threat from nuclear terrorism.
The summit is the third time world leaders have met to discuss how to keep nuclear materials out of terrorists' hands.
The first meeting focused on fissile materials, while the follow-up in Seoul looked at nuclear safety and security and the protection of highly active radioactive sources. The Hague summit will review progress made over the past four years.
John Key says there has been been progress, despite a number of objectives from the previous two summits not being met and New Zealand is quite forward leading in terms of its legislation in managing nuclear materials.
Mr Key also plans to speak with major world leaders while attending the third Nuclear Security Summit. He intends to meet German Chancellor Angela Merkel and the Prime Ministers of Canada and Indonesia.