“Let’s work out a good deal!” Trump wrote in the letter, whose authenticity was confirmed by the White House.

The 35-year-old Future Syria Party’s Secretary-General championed tolerance in Syria and worked to unite Christians.

“We always speak quite frankly with the Russian side on the matter,” Foreign Minister Elmar Mammadyarov said.

Turkish airstrikes against Kurdish forces have partially destroyed a 3,000-year-old temple in northern Syria.