The U.S. Treasury Department has revoked a temporary authorization that had allowed for the sale of Iranian oil, following a new round of attacks on vessels moving through the Strait of Hormuz.

The U.S. had issued what was supposed to be a 60-day authorization in late June, as part of a tenuous peace agreement with Iran. The agreement had required Iran to allow free and open passage through the strait over that period.

Three separate ships were attacked in the Strait of Hormuz on July 7, the most in any single day since the U.S.-Iran peace deal. The first was reportedly against a LNG tanker in the early hours of the day. The second was a Saudi crude oil tanker, while the third was against an unspecified tanker. 

“Iran will only reap benefits if they exhibit good behavior,” a U.S. official told CNBC on July 7. “Iran’s actions in the Strait were wholly unacceptable to the United States and will be met with consequences.”

Iran has repeatedly insisted that ships must only transit through approved passages in the strait, under threat of an "immediate and forceful response" from the Iranian military. The main passage through the Strait of Hormuz has remained closed until it can be de-mined, with ships having instead moved through smaller northern and southern routes.