grevinnan, which power those first ladies have complete access to, when their husbands don't have?These women have complete access to the people in power so why not get together and talk about what they can do. They probably know a lot more about what the situation is than most of us who only read what the press is allowed to write.
The women behind the men ruling the world have immense power to persuade and to impart a different perspective. Besides most men in power marry very capable and intelligent women.
if you are speaking of "women behind the men ruling powerful countries in the world" that's something different, and still they don't have complete access of power. plus, none of those invited first ladies are from such country (apart carla bruni)