Following their first meeting, Theresa May and Donald Trump have indicated that they will look to co-operate closely on a range of topics.
With Brexit negotiations and diplomatic issues in Europe and the Middle East at hand, ITV News Political Correspondent Paul Brand looks at how the two leaders might look to position themselves on the world stage.
To be clear, this was as benign and accident-free a start to a new "special" relationship as Theresa May and her advisers could have wanted.
Voice and body language expert Caroline Goyder writes for ITV News about the signals given off during the meeting between the two leaders.
In the past, Mr Trump has described the organisation as "obsolete" and questioned the contribution of some members.