With international tensions disturbingly high due primarily to the Russian invasion of Ukraine, Canada is updating emergency protocols to deal with fallout from a possible tactical nuclear exchange in Europe, or the spread of radiation across the ocean from a Ukrainian power plant explosion.

Internal Public Safety Canada notes show the measures include updating a highly secret plan to ensure the federal government can continue to function in a severe crisis.

Russia’s invasion of Ukraine in February of last year prompted a series of federal discussions and initiatives aimed at bolstering Canada’s preparedness for a catastrophic nuclear event.

It includes providing Canadians with information on what to do in the event a ballistic nuclear missile, or missiles, are deployed, although the specifics are not yet known from Public Safety Canada.