Iran reportedly threatened the US with a large-scale attack if Israel launches an attack on the Ali al-Taher ridge, southern Lebanon, Reuters reports citing sources

The distinction worth drawing is between threats tied to a specific trigger, as here, and open-ended warnings: conditional threats historically leave room for both sides to de-escalate, since the trigger remains within the counterparty's control. The detail that the threat is routed to Washington rather than directed solely at Israel fits an established pattern in which Tehran treats the US as the party with leverage over Israeli operational decisions. The named geography, a specific ridge in southern Lebanon, suggests the friction point is the Israel-Hezbollah front, where ground operations have repeatedly been the catalyst for wider regional repricing in crude and safe-haven FX. What is worth watching is whether Israel proceeds regardless, whether the threat is echoed officially rather than through sourced reporting, and any movement in US force posture in the region, which has tended to be the tell that rhetoric is hardening into preparation. Premia in oil and the dollar in comparable episodes have typically faded quickly where the trigger event did not materialise.