The State Department underlined its commitment to Ukraine, three years since the annexation.
Trump made explosive accusations amid a Russia scandal in his administration.
Trump's new travel ban is set to come into effect later this week.
According to CNN, the team looking into the election hack is also heading the server investigation.
Lauded by colleagues and ex-diplomats, Obama’s former man in Beijing is set to go to Moscow.
Diplomats from Ukraine and five other former Communist countries rallied for the U.S. Senate’s backing.
The U.S. president said Russia “ran over” Obama for eight years.
Vladimir Putin’s spokesman called the U.S. “global player number one.”
Nikki Haley said Washington “will not hesitate to call out Russia" for transgressions.
Florida Senator Marco Rubio urged to remind the Kremlin that its critics are not silenced by death.
China objects to the deployment in South Korea of the THAAD, as the radar is capable of penetrating Chinese territory.
Russia's deputy foreign minister said "it would be desirable to believe that changes in Washington will create a window of opportunity for an improvement of a dialogue between our countries."
Mattis said the U.S. should ensure its diplomats "negotiate from a position of strength."
Vladimir Putin's spokesman said people should not believe newspaper reports as they could be fake news.
The CIA has not confirmed the visit, but officials and media expect Pompeo Thursday.
Trump was mentioned 202,000 times in January while Putin was mentioned 147,700 times January according to Russian media analysis.
Hayley criticised Russia for escalation in Ukraine’s east and said Crimea sanctions will remain.
UAE’s Minister of Foreign Affairs said Trump’s denial of Islamophobia is evidence enough.