The Financial Post reports in its Tuesday edition that last week, U.S. President Donald Trump pushed pause on the sweeping "Liberation Day" tariffs he had placed on more than 50 countries earlier in the month. The Post's Barbara Shecter said most of the attention went to plunging stock markets. But it was activity in the bond market, which threatened to drive borrowing rates higher, that market watchers say prompted the stunning flip-flop from the White House. Immediately after Mr. Trump's April 2 announcement of sweeping "reciprocal" tariffs on U.S. trading partners, bond yields fell along with stocks -- but then yields began to steadily rise, the opposite of what is expected. It was "not normal behaviour," said Douglas Porter, chief economist at Bank of Montreal. The yield on 10-year Treasuries rose from 3.9 per cent to 4.5 per cent, while the yield on even longer-term bonds -- 30-year -- briefly traded above 5 per cent. Rising yields brought on by lower prices are an indication that the underlying instrument is considered riskier. Activity in the bond market after Mr. Trump's tariff announcements suggested investors believed there was a greater risk of both recession and inflation in the United States as a result.