Washington DC, March 14 -- US President Donald Trump's special envoy for Russia-Ukraine negotiations, Keith Kellogg, has been excluded from high-level discussions aimed at ending the war in Ukraine, according to a report in NBC News.

The news outlet, citing a Russian official, said that Kellog did not attend the US-Russia summit in Riyadh on February 18 because Russian President Vladimir Putin thought the "former American general was too pro-Ukraine."

The 80-year-old Kellog, who was confirmed as Trump's envoy for the Russia-Ukraine peace in January, was also not present on Tuesday in Saudi Arabia for a meeting between US National Security Adviser Mike Waltz, Secretary of State Marco Rubio, and a Ukrainian delegation.

Ukraine agreed to ...