CNBC:

The U.S. intelligence community and Treasury Department can make it harder for Iran to meddle in regional affairs by exposing Iranian businesses that have ties to the nation's elite security force, CIA Director Mike Pompeo and National Security Advisor H.R. McMaster said on Thursday.

Their comments suggest the investment climate in Iran could become more challenging just as foreign firms seek to build or restore ties in the country following the lifting of sanctions last year.

The remarks also come as the administration overhauls its policy toward the U.S. adversary. Last week, President Donald Trump refused to certify the 2015 Iran nuclear deal, marking the beginning of a campaign to toughen the terms of the agreement and rein in Iranian activities not addressed by the accord.

Those "transgressions" include Tehran's support for the U.S.-designated terror group Hezbollah, its threats to Israel and Lebanon and its support for Shiite Muslim militias in neighboring Iraq, according to Pompeo.

"It has been far too inexpensive for the Iranians to conduct this adventurism. We should raise the cost of that," Pompeo told an audience at the Foundation for Defense of Democracies' National Security Summit.

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