Market jitters returned this afternoon after reports emerged that President Trump is pushing for last-minute amendments to the US-Iran nuclear agreement, sending gilt yields oscillating as traders priced in fresh uncertainty. The pound took a hit against the dollar, slipping 0.4% to $1.3120, as the prospect of a weakened deal reignited fears of Iranian enrichment acceleration and Middle Eastern instability.
According to White House sources, the proposed edits focus on sunset clauses and verification protocols, areas where Trump has long expressed dissatisfaction. The UK government, meanwhile, has insisted on robust nuclear safeguards, a move that will likely strain the special relationship further. Treasury officials are privately concerned that any dilution of the deal could trigger capital flight from London, given the City's heavy exposure to Gulf sovereign wealth funds.
This is a classic case of political risk spilling into financial markets. The FTSE 100 dipped 0.6% in afternoon trading, with defence stocks like BAE Systems bucking the trend. Oil prices climbed 2% on supply disruption fears, adding to inflationary pressures that the Bank of England has been battling with rate hikes.
The bottom line is that investors hate uncertainty. A half-baked deal is worse than no deal because it leaves everyone guessing. The gilt market is already pricing in a higher risk premium, with the 10-year yield rising 5 basis points to 4.12%. If this unravels, we could see a repeat of the 2019 volatility spike.
The UK's insistence on safeguards is fiscally responsible but politically inconvenient for a US administration eager for a quick victory. The Foreign Office is playing a long game, but the markets are not known for patience. Expect more turbulence as the details leak out. The only certainty is that the cost of hedging against geopolitics will go up.
