Westminster insiders are buzzing this morning. The news from Tehran is a coup for the Foreign Office. A deal, long thought improbable, has been signed. It signals a recalibration of Britain's global posture. But let's be clear. This is not a moment for naive celebration.
The PM's team is already spinning this as a triumph of quiet diplomacy. They are briefing that Number 10 and the FCDO worked in lockstep. I have sources saying the key player was the National Security Adviser. He got the nod after a secret backchannel with Iranian moderates. The Lobby is full of whispers about who knew what and when.
Make no mistake. The opposition is watching closely. Shadow Foreign Secretary sources tell me they are preparing a volley of questions. 'What concessions were made?' 'What is the cost?' They smell blood. The Liberal Democrats are even more sceptical. They remember previous deals that unravelled.
This is a classic wedge issue. It splits the Tory backbenches. The ERG faction is furious. They see this as appeasement. One former minister called it 'a surrender to the ayatollahs.' But the One Nation group is quietly relieved. They want to project a responsible, global Britain.
Polling data just landed on my desk. It is still early but the focus groups show a split. Older voters are wary. Younger voters are more optimistic. But Labour's core vote is not impressed. They see this as a distraction from domestic crises.
The game now is about narrative control. The PM is due at the despatch box tomorrow. His team is briefing that he will strike a Churchillian tone. But the real test is in the week ahead. Will the deal hold? Will Iran comply? The sceptics are sharpening their knives.
I hear the Foreign Secretary is nervous. He is making calls to allies in Washington and Paris. He needs their backing to sell this domestically. The Americans are supportive but cautious. The French are annoyed they were not more involved.
This is a high-stakes gamble. If it pays off, the PM gets a foreign policy win. If it fails, the fallout will be brutal. The game is on.
