The leaders of 54 countries have entered round table talks about nuclear security at the Nuclear Security Summit in Seoul today.
Prime Minister John Key is among those at the summit, which was instigated by US President Barack Obama and first held in 2010.
After a working dinner last night, the leaders entered the main summit session today. Mr Key was seated between Japan's Prime Minister Yoshihiko Noda and Canada's Prime Minister Stephen Harper. Japan is among the countries most strongly opposed to North Korea's nuclear programme and has criticised strongly North Korea's proposals for what it claims is a peaceful rocket launch planned for next month.
US President Barack Obama was among the last leaders to arrive in the conference hall and made a point of greeting most other leaders as he made his way to his seat next to Korean President Lee Myung-bak, who is chairing the Summit. Prime Minister John Key got a squeeze on the arm from Obama as he walked past Mr Key's chair - the pair had already spoken in the Leaders' lounge before entering the summit. Obama stopped to talk to both Mr Noda and Mr Harper at length.
Mr Key will give his statement to the conference this afternoon and has said he would challenge countries with nuclear stockpiles to go further in securing and eliminating those materials.