Theresa May Mark Rutte Justin Trudeau

Prime Ministers Theresa May of the United Kingdom, Mark Rutte of the Netherlands and Justin Trudeau of Canada pose for photos at NATO headquarters in Brussels, May 25, 2017

Prime Ministers Theresa May of the United Kingdom, Mark Rutte of the Netherlands and Justin Trudeau of Canada pose for photos at NATO headquarters in Brussels, May 25, 2017 (Flickr/Justin Trudeau)