Last I knew going on WORLD TOUR meant actually going to about 85% of the entire planet, not just 3 continents. Canada is part of the world too you know Kojima Pro.  From June 2nd til end of June check out if Hideo & crew will be hitting your area to sign game copies, action figures, or various body parts. 

MGS4 World Tour Site. 

Also check out PS3 Fanboy's pictures of the London stop. PS3 Fanboy MGS4 London