I'll structure my answer in two ways.
The first is what CSIS can do. We would investigate the information using all techniques to find out as much as possible about the interference of diplomats based in Canada. When we have that information, the service has the option of taking direct measures using our threat reduction mandate. In the case of a foreign diplomat, I do not foresee a scenario in which we would not engage GAC. Global Affairs Canada is the authority in Canada for ensuring the enforcement of the Vienna Convention on Diplomatic Relations. They interact on a day-to-day basis with foreign diplomats. At that point, there are different tools at the disposal of the government through Global Affairs Canada to enforce the Vienna convention, up to and including declaring someone persona non grata from the country.