The so-called E3 - Britain, France and Germany - have warned they will invoke the United Nations snapback mechanism to reimpose international sanctions on the Islamic Republic. Reimposing international sanctions will only make the situation over Iran's nuclear issue more complex,

Iran, Britain, France and Germany will hold nuclear talks in Istanbul on Friday, an Iranian Foreign Ministry spokesperson said early on Monday, following warnings by the three European countries that failure to resume negotiations would lead to international sanctions being reimposed on Iran.