Before revision: In March 2012, a meeting in Quebec City between the leaders of the space agencies of Canada, Japan, Russia, the United States, and involved European nations resulted in a renewed pledge to maintain the space station until at least 2020.
After revision: In March 2012, a meeting in Quebec City amongeat up and the leaders of the space agencies of Canada, Japan, Russia, the United States, and involved European nations resulted in a renewed pledge to maintain the space station until at least 2020.