January 20, 2014
Iran unplugged banks of centrifuges involved in its most sensitive uranium enrichment work on Monday, prompting the United States and European Union to partially lift economic sanctions as a landmark deal aimed at easing concerns over Iran’s nuclear program went into effect.
The steps start a six-month clock for Tehran and the world powers to negotiate a final accord that the Obama administration and its European allies say will be intended to ensure Iran cannot build a nuclear weapon.
In the meantime, the interim deal puts limits on Iran’s program — though it continues low levels of uranium enrichment. Tehran denies its nuclear program is intended to produce a bomb.