At the time of the October 7th massacre, about 450 Hamas terrorists had ties to Canada, some of them residents themselves, a source familiar with the intelligence told Global News.This number included Usama Ali, also known as Radwan and Rizwan, who the US Treasury Department claimed was appointed as head of the Hamas Investment Office. Ali holds both Lebanese and Canadian citizenships, and his location is currently unknown.According to the Treasury Department's release, the Hamas Investment