The European Union has confirmed it’s received a formal response from Tehran to recent proposals aimed at reviving the Iran Nuclear Deal. The 2015 accord, which offered sanctions relief for Iran in exchange for curbs on its nuclear activities, has been in tatters since the US withdrew in 2018 under Donald Trump’s presidency. The EU has been trying to stitch the deal back together over more than a year of stop-start negotiations, mediating indirect talks between Tehran and Washington.