Iranian officials have confirmed that a mutual understanding on the implementation of the interim P5+1 deal has been reached, and that the implementation of the pact will begin between 1/20 and 1/30.

Western officials didn’t dispute this, but tried to portray it in a much less positive light, saying there were still some minor points that needed to be addressed. They didn’t clarify what those were, however, nor did they suggest they would keep the deal from going into effect.

Under the pact, Iran would limit its uranium enrichment to 5% (in practice 3.5%, which is the level the Bushehr power plant uses) and not bring the Arak reactor online. The P5+1 agrees to remove certain sanctions from Iran.

Certain aspects of the pact remain disputed between Iran and the US, with the Obama Administration imposing new sanctions that others agreed violated the “spirit” of the agreement, and Iran has installed a handful of research centrifuges which some of the P5+1 members argue obliges them to take other, operational centrifuges offline.