Turkish Finance Minister Berat Albayrak met with US President Donald Trump during his visit to Washington. Following the meeting, he said Trump took a “reasonable” stance regarding Turkey’s planned purchase of a Russian S-400 air defense missile system, Reuters reported quoting Turkish media.

Albayrak, who is Turkish President Tayyip Erdogan’s son-in-law, said he also met Treasury Secretary Steve Mnuchin and White House adviser Jared Kushner, who is Trump’s son-in-law.

“During our meetings, where we discussed steps to increase our cooperation, we were received by U.S. President Donald Trump. We passed on the greetings and messages of our president,” Albayrak wrote on Twitter on Tuesday.

“He listened in a very reasonable way with a positive understanding to the process regarding Turkey’s needs for the S-400s,” broadcaster CNN Turk cited Albayrak as telling reporters. “There was a very positive, constructive conversation.”

He also noted that they also discussed the increase in bilateral trade between the United States and Turkey to $75 billion annually from $20 billion currently.