British Foreign Secretary Philip Hammond attended a ceremony at the opulent 19th century building in the Iranian capital where attackers in 2011 burned Britain’s national flag, slashed portraits of British monarchs and stole goods.

Iran’s Foreign Minister Javad Zarif, asked if Tehran would now countenance a restoration of the US diplomatic mission, said the United States’ “illogical attitude” towards Iran meant the time was not ripe for a similar move with Washington.

“It seems that there needs to be a change in that kind of attitude and behavior on the part of the U.S. So the situation is different with the U.S.,” he sa