US-Canada tariff truce falls apart, new 50% tariffs begin

Fact-check index: 78/100 — Core facts (50% tariffs on C$20bn Canadian goods taking effect Saturday, failed last-minute talks, Carney's 'dollar for dollar' pledge) are well supported by the cited BBC and France24 sources, but the USD conversion figure and the framing of a deal having been 'very close' rely on an unlisted prior article, and the analytical claims about broader diplomatic fallout are unsourced speculation.

• New US tariffs of 50% on C$20 billion of Canadian goods took effect on Saturday — Matches BBC ('New 50% levy on $20bn of Canadian imports comes into force') and France24 ('tariffs...took effect on Saturday').
• The C$20bn figure equals roughly $14.6bn USD — Sources give the figure only as '$20bn' without specifying currency; the CAD-to-USD conversion is plausible arithmetically but not independently confirmed by the provided sources.
• Officials had called a Canada-US trade deal 'very close' days before the tariffs hit — Not directly stated in the provided source snippets; relies on the linked earlier nunissum article, which isn't part of the supplied source material. Kuwait Times headline ('more work to do as tariff deadline looms') is in tension with 'very close.'
• Carney said Ottawa will match the levies 'dollar for dollar to protect our workers and businesses' — Exact quote matches France24 article verbatim, correctly cited.
• Talks failed in their final hours / at the last minute — Confirmed by CTV ('fail to strike last-minute trade deal'), Seattle Times ('Talks Collapse'), and News Channel 3-12 ('talks fail at last minute').
• The tariffs reopen a trade war both governments had appeared close to shelving — Characterization of prior closeness to a deal is asserted but not directly evidenced in the given source snippets.
• Analysis that other governments may hold off unwinding retaliatory measures until tariffs are durably lifted — This is the article's own speculative analysis, not attributed to or supported by any cited source.
• Carney's pledge signals Ottawa intends to escalate rather than wait out the tariffs, risking a tit-for-tat cycle — Interpretive commentary not drawn from source material; goes beyond the reported quote.