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FTSE 100 drops as Rio Tinto disappoints, US-Iran tensions are a factor

London's FTSE 100 fell from its record highs on Thursday as Rio Tinto shares dropped after the global mining company's earnings missed expectations. Meanwhile, simmering tensions between the U.S. and Iran kept investors wary.

Blue-chip index dropped 0.5%, after two consecutive sessions of closing at record highs. The mid-cap FTSE 250, which is primarily focused on the domestic market, was down by 0.4%. Rio Tinto dropped 3.6% following the miner's?reporting flat annual earnings. Lower prices at its iron ore business, its mainstay, were offset by a strong performance?in its copper division.

Other London-listed companies also fell as copper prices were 'hit by a stronger dollar, increasing inventories, and reduced demand because of the Lunar New Year holiday in China.

Axel Rudolph is a senior financial analyst with IG. He said: "A stronger US Dollar - at one month highs amid flight to safety flows - added additional pressure on precious and basic metals. This weighed on UK mining stocks and impacted the FTSE 100’s stellar performance." Oil prices have risen by over 2% as investors around the world are unnerved by tensions between the U.S. and Iran regarding Tehran's nuclear programme.

Investors looking to diversify away from U.S. stock that has been under pressure?by AI disruption concerns have been a major factor in the UK's stocks finding a?broad support?. British Gas's Centrica, which owns British Gas, was the largest faller in the blue-chip index on Thursday. It had warned that its 2026 profit forecasts at its energy trading arm would be missed and halted its share buyback program after reporting a 39% decline in annual profits. (Reporting by Tharuniyaa Lakshmi in Bengaluru; Editing by Mrigank Dhaniwala, Kirsten Donovan)

(source: Reuters)