Officials said only that ‘the anticipation and the benefit’ for the hack was in the UAE.
The two leaders spoke informally for an additional hour after their first official meeting.
After certifying that Tehran is adhering to the nuclear deal, officials announced penalties for other “malign activities.”
Sanctions cover non-nuclear activities, including ballistic missile development.
Hackers planted news stories with false quotes attributed to Qatar’s emir, which were then cited to condemn his government.
The properties in Maryland and New York were seized in December on orders from the Obama administration.
The decision followed heated internal debate that cast the secretaries of state and defense against some White House officials.
The talk follows the cancellation of an earlier session scheduled last month in St. Petersburg.
Little apparent sign of compromise as U.S. fears threat to counterterrorism operations.
The meeting with Sergei Lavrov will be the first face-to-face contact the president has had with a senior official of the Russian government.
