- US signals potential Iranian response as early as today amid escalating tensions.
- Hardline posture underscores ongoing military and diplomatic pressure campaign.
- Global energy markets brace for volatility as Gulf risk premium rises.
Rubio's Ultimatum
US Secretary of State Marco Rubio stated that the US expects a response from Iran today, according to people familiar with the matter. The comment follows a series of escalating warnings from Washington, hinting at further decisive actions if Iran does not comply with demands to curb its nuclear and missile programs.
"We should get Iran response today," Rubio said, declining to elaborate on consequences of non-compliance. The administration has emphasized a strategy of "hardest hits to come" unless Iran halts its regional activities and ballistic missile development.
Military and Diplomatic Chessboard
The statement comes amid intensified US and Israeli operations targeting Iranian military assets, including drone and missile arsenals. Iran has signaled openness to back-channel talks through Omani mediators but maintains red lines on its nuclear enrichment and regional influence.
Efforts to de-escalate have hit a snag, with indirect talks in Muscat making little progress. Without a diplomatic breakthrough, analysts warn of a potential spiral into broader conflict.
Market Tremors
Global oil prices have fluctuated sharply, with Brent crude rising on fears of disruption to Gulf shipping lanes. Insurance and shipping rates are climbing as risk premiums adjust. "Markets are pricing in a significant chance of a supply disruption," said an energy analyst at a major bank.
Human Element
A senior Iranian official, speaking on condition of anonymity, said Tehran is "ready for any scenario," while emphasizing its willingness to negotiate. The official noted that Iran has not received any formal US proposal for talks.
Correction: An earlier version of this article misstated the timing of Rubio's statement. The correct timing is May 2026.