Al Jazeera's Nils Adler reports that, nearly a month after Donald Trump's October 2026 diesel deal with Vladimir Putin, no Russian diesel has reached the United States and tankers are diverting toward Brazil and the Mediterranean. Traders hesitate because Congress's import ban still stands despite the Treasury's exemption, while Governor Mikie Sherrill warns ports against taking the fuel and analysts doubt it would relieve prices topping $6 a gallon.