Oil prices are falling on headlines that a US-Iran peace deal may be taking shape, which markets are interpreting as a potential end to Iranian supply restrictions. If sanctions are eased, Iran — which holds some of the world's largest proven reserves — could add meaningful barrels to an already-uncertain supply picture, with estimates of 1-2 mb/d of additional capacity over 12-18 months. The headline is significant but details remain sparse, and past Iran nuclear talks have repeatedly stalled at the implementation stage.

The second-order setup centers on which energy names are most exposed to a sustained oil price decline: high-cost producers and pure-play E&Ps carry the most downside, while integrated majors and refiners (who benefit from lower input costs) may see relative outperformance. Key things to watch: official confirmation of a deal framework, OPEC+ response to potential Iranian barrels, and whether WTI breaks and holds below key technical support.