(Bloomberg) — A last-minute deal to head off a trade war between the US and Canada has given investors a temporary reprieve, but Canadian leaders are warning about the high-stakes negotiations ahead.Most Read from BloombergState Farm Seeks Emergency California Rate Hike After FiresNew York’s First ‘Passive House’ School Is a Model of Downtown DensityWhen French Communists Went on a Brutalist Building BoomNYC’s Newest Transit Leader Builds a Worker-Driven StrategyHistoric London Elevator Faces LRead More