LONDON (Reuters) - The foreign ministers of Britain, France, Germany and the United States expressed their “shared fundamental security interest in upholding the nuclear non-proliferation regime” for Iran when they met on Thursday, Britain said. “Regarding Iran, the E3 and the United States expressed their shared fundamental security interest in upholding the nuclear non-proliferation regime and ensuring that Iran can never develop a nuclear weapon,” the foreign ministry said. The ministers also “expressed their shared concerns over Iran’s recent actions to produce both uranium enriched up to 20% and uranium metal,” it said in a statement.