The dimming prospects of returning to a nuclear agreement with Iran

Iran’s stockpile of enriched uranium has grown significantly since the United States withdrew from the multilateral nuclear deal agreed in 2015. The time it would take for Iran to produce enough fissile material for one nuclear weapon is now less than seven days. But negotiations in Vienna over restoring the deal have reached a stalemate, and the US is no longer placing high priority on its restoration, focusing instead on supporting Iranian human-rights advocates and sanctioning Iranian oil sales.