The Obama administration began softening sanctions on Iran after the election of Iran’s new president in June, months before the current round of nuclear talks in Geneva or the historic phone call between the two leaders in September.

While those negotiations now appear on the verge of a breakthrough the key condition for Iran—relief from crippling sanctions—began quietly and modestly five months ago.

A review of Treasury Department notices reveals that the U.S. government has all but stopped the financial blacklisting of entities and people that help Iran evade international sanctions since the election of its president, Hassan al-Rouhani, in June.