Tillerson, who was in Wellington, New Zealand, said he couldn't comment on the details of the Russia investigations or whether they could bring down the administration because "I have no direct knowledge," Fox News reported.

"He's been quite clear with me to proceed at whatever pace and in the areas I think we might make progress," Tillerson said. "I really am not involved in any of these other issues."

As UNIAN reported earlier, in late May, The Washington Post referring to U.S. officials and experts reported that the Trump administration wanted to restart talks with the Russian Federation on the peaceful settlement of the Ukraine crisis.