US-Canada trade talks have collapsed, with Washington imposing 50 percent tariffs on around US$20 billion of Canadian goods and Ottawa preparing to retaliate. We look at why the dispute matters.

Elsewhere, we look at a steelmaker Morgan Stanley sees more upside for.

It is also a crucial week for markets, with Nvidia earnings PCE inflation and Fed Chair Kevin Warsh at Jackson Hole, a constellation that could reset expectations for interest rates.

On Up or Down, Shein heads for a long-awaited Hong Kong IPO at a dramatically lower valuation, Alibaba slides after a US$10.2 billion share placement, and Tesla rallies on its latest robotaxi breakthrough.

Plus, our last words today are Casino and Box Office.