Brent crude fell as much as 10% on Wednesday after the US midterm elections as
markets pushed up bets that tensions with Iran will ease. US Vice President
Vance publicly attributed the Republican loss to the Iran war, reinforcing
expectations the Trump administration may seek diplomatic channels to avoid
escalation; Senate Democratic leader Schumer said he would press to end the Iran
war. Atlantic Council senior fellow Ben Cahill and Raymond James analyst Pavel
Molchanov cited Vance’s comments as a key catalyst, and a Marshall Wace
strategist said markets are pricing in potential constraints from Congress and
figures inside the administration on war decisions. Analysts warn it remains
unclear whether Vance’s remarks signal a genuine policy shift; a sustained fall
in oil prices would require a durable diplomatic de‑escalation between the US
and Iran.