Last week we prayed for the nations to work towards ending Iran’s history of making weapons-grade nuclear material in underground facilities while denying their existence. This week the USA has joined talks in Vienna aimed at reviving the Iran nuclear deal which the Trump administration abandoned in 2018. Acting as intermediaries, officials from the UK, France, and Germany are shuttling between two hotels in the Austrian capital. Diplomats from the two other remaining parties, Russia and China, are also attending. President Biden has said he wants to return to the landmark accord. But the six remaining states need to find a way for him to lift the sanctions imposed by his predecessor and for Iran to return to the agreed limits on its nuclear programme. Iran has said it will not meet the USA face to face until that happens.