European diplomats from Britain, France, and Germany are meeting with Iran's deputy foreign minister in Istanbul to attempt to restart negotiations over Iran's nuclear enrichment program. The talks come after a pause caused by recent conflict and damage to Iran's nuclear facilities. The European countries are pressing Iran to make concrete steps toward limiting its nuclear activities, warning that failure to do so could lead to the restoration of severe international sanctions. Iran, however, maintains its right to enrich uranium and has threatened to leave international treaties if sanctions are reimposed. The outcome of these talks could have significant consequences for the future of Iran's nuclear program and international efforts to prevent nuclear proliferation.