Multiple sources say that Trump is expected to sign the Russia-Iran sanctions bill as early as tomorrow, reports RFERL

The distinction that has mattered in past episodes is between primary sanctions, which bind US persons and are largely symbolic for already-isolated targets, and secondary sanctions, which reach third-country banks, refiners and shippers and are where the genuine supply and payment disruption tends to sit. Russia and Iran both being in scope raises the energy transmission channel directly: crude and products flows from sanctioned producers have previously rerouted rather than stopped, with the friction showing up in freight, insurance, discounts to benchmarks and the shadow fleet rather than in outright volume loss. The euro and yen sensitivity flagged in the tags reflects the established pattern that European and Asian buyers of sanctioned barrels bear more of the adjustment cost than US markets. What is worth watching is the waiver language in the final text, any wind-down periods for existing contracts, and whether allied governments coordinate enforcement or carve out exemptions, since those details have historically determined whether such bills bite or fade into the background.