Monday July 04, 2005 By BETH DUFF-BROWN Associated Press Writer TORONTO (AP) Though many view Canada as an unassuming neutral nation that has skirted terrorist attacks, it has suffered its share of aggression, and intelligence officials believe at least 50 terror groups now have some presence here. They are from Sri Lanka, Kurdistan and points between and include supporters of some of the best-known Mideast groups, including al-Qaida, authorities say. Osama bin Laden named Canada one of five so-called Christian nations that should be targeted for acts of terror. The others, reaffirmed last year by his al-Qaida network, were the...