US President Donald Trump’s special envoy for the Middle East Steven Witkoff expects build-up of confidence between Washington and Moscow after Russian national Alexander Vinnik was released in exchange for US national Marc Fogel, Report informs via TASS.

“We had a really good back channel, and it turned out to be very, very credible and enormously helpful. And that led to, I think, a lot of trust building candidly between the Trump administration and President [of Russian Vladimir] Putin,” Witkoff said in an interview aired by the Fox News TV channel.