I'm not sure why the government hasn't responded to those calls. We've seen several countries in Europe expel numerous Russian diplomats. We've not seen Canada expel any Russian diplomats since February.
Added to that, there was a fairly disturbing incident about a month ago, which was reported publicly. In Ottawa, at the embassy, people got out of what appeared to be a Russian diplomatic car and vandalized a blue and yellow painted bike that was placed outside the embassy, on public property. The bike was spray-painted and destroyed by what appeared to be people who emerged from a car that was later seen on the property of the Russian embassy.
There has not been any response to this that I have knowledge of. It is our position that the Russian embassy is a security threat to Canadians and that our government should be forceful in responding to that threat.