Twitter CEO Dick Costolo took on Iran's President Hassan Rouhani the way he knows how to best:

In 140 characters or less.

. @HassanRouhani Mr. President, enjoying your Tweets from the UN. We would love the Iranian people to enjoy them as well. When will that be?

- dick costolo (@dickc) September 25, 2014

Rouhani has been a prolific tweeter since he arrived in New York for an annual United Nations General Assembly. However, the website remains banned in his home country.

As of this afternoon, Rouhani had yet to respond to Costolo's tweet.