The Americans will be part of the post-forum dialogue meeting tomorrow - and some of their Pacific territories, Guam, the Northern Marianas and American Samoa, are seeking observer status at the forum.
On a smaller scale, the Palestinian Foreign Minister Riyad al-Malik has been working the diplomatic circuit on the fringes of the forum, with the Palestinian Authority promoting a "statehood" resolution at the United Nations. Israeli ambassador to New Zealand Shemi Tzur is also working the forum.
Prime Minister John Key said last night that having the weight of the European Union and President Barroso's contribution was "a real bonus".
Mr Barroso said the EU's solidarity with the Pacific was "growing and real".
After a meeting with Mr Key last night, Mr Barroso said: "We want to renew our engagement with this region and of course we see New Zealand as a very close friend, a like-minded partner".
They also discussed the global economy in which stability in Europe is a primary focus.
The EU is the second largest donor in the region; the commission budgeted to spend $1.2 billion in the five years to 2013.
Mr Barroso said the fund was not enough and the EU was working on a bigger strategic plan to link development funding and climate change.
Today Mr Barroso will receive an honorary doctorate at Auckland University, and leaders will go to Waiheke Island for their decision-making retreat.
