Canada

Canada is already imperialistic in Palestine by cooperating with Israel and the US, which is its role in that imperialist project. Imperialism isn't just "when big bad guy invades with troops" like in your Saturday morning Star Wars cartoons, it's a system of power the functions to subordinate other groups of people to the benefit of a privileged metropole so that the resources on the land those people exist on can be extracted (as well as their labour). Or do you think it makes you sound like a pragmatic realist to pretend you're too dumb to know that?

Canada literally hosts companies that are Israeli owned or contribute to Israels genocide campaign and the state invests in Israeli businesses, the fucking CPPIB increased its investment in Israeli businesses, which amounts to tens of billions of dollars; how fucking much of a performance does dedicating a fraction of that to "aid" seem to be to you now?

You aren't a serious person, stop talking about serious topics.

Boycott Israel maybe

The by-the-books-written-by-imperialists non-imperial answer is a UN peacekeeping mission. Canada might provide the mission with troops, but they would be operating under a UN mandate, likely to enforce a two-state solution with hard-specified borders. All this would take is for the US, UK, and France to not veto a resolution to organize a peacekeeping mission.

The isolationist non-imperial answer is to stop funding Israel and see what happens.

The actual anti-imperial answer is to give land back to native people, replace capitalism with voluntary association, and decentralize military infrastructure, so people that live in Canada are resilient to invasion but their capacity to project force is limited to individual initiative with the support of a community.

Given our commitment to standing up for middle powers, it does make sense that we'd get involved in the war on the side of Iran/Lebanon.