CNBC Daily Open: U.S. takes aim at friends and foes alike

U.S. President Donald Trump gestures as he speaks to the media before boarding Air Force One at Joint Base Andrews in Maryland, U.S., en route to Myrtle Beach, South Carolina on Aug. 21, 2026. Evan Vucci | ReutersHello, this is Hui Jie writing to you from Singapore. Welcome to another edition of CNBC's Daily Open.President Donald Trump has accused Canada of wanting the benefits of a U.S. state, as the two countries failed to reach a trade deal. Treasury Secretary Scott Bessent, meanwhile, is threatening the "single greatest financial offensive ever marshalled" against Iran.As the U.S. goes after friends and foes alike, focus is also on Treasury yields that have resumed their upward path after a brief hiatus. What you need to know todayThe relationship between the U.S. and Canada took a turn for the worse over the weekend.The U.S. on Saturday levied 50% tariffs on some Canadian goods, after trade talks between the neighboring countries collapsed, with both governments blaming the other for not reaching a deal.Canadian Prime Minister Mark Carney said Ottawa would respond dollar for dollar, with retaliatory duties on U.S. goods taking effect Sept. 8, prompting Trump to accuse Canada o...