The government's decision on where in Africa to send Canadian peacekeepers will rank as one of its most portentous — if the Liberals get it wrong it could prove fatal to their prospects at the next election.This helps explain why, a year after Justin Trudeau proclaimed that Canada is back on the world stage, Canada is not yet back.The plans appear to have been drawn, scrapped and redrawn in recent months. But sources suggest that if a decision on deployment is not imminent, it will at least come down before the end of the year.