Olivia Gazis

Ukrainian Ambassador Olga Stefanishyna took note of what she said was an improved relationship between Ukraine and the U.S., telling reporters Thursday that the "overall dynamics" have shifted.

A senior State Department official said the visa would be reinstated immediately if Brazil grants diplomatic approval for President Trump's nominee for U.S. ambassador to Brazil, Daniel Perez.

The State Department has revoked the visa of Brazil's ambassador to the United States, according to a senior department official, marking the latest escalation in a growing diplomatic dispute between Washington and Brasília.

Robert Gilman, 32, is being held at a Russian hospital in what his advocate, Eric Lebson of Global Reach, described as a "dissociative stupor."

American intelligence assessments indicate Russia could be increasingly willing to authorize provocative actions on NATO territory, with a goal of testing the alliance, U.S. officials told CBS News.

American intelligence assessments indicate Russian President Vladimir Putin could be increasingly willing to authorize provocative actions that could extend onto NATO territory, U.S. officials briefed on the matter told CBS News.

Russia has released an American military veteran who spent more than four years in prison under abusive conditions and was said to be gravely ill and at risk of dying, President Trump said Tuesday.

Robert Gilman, a U.S. Marine veteran who was imprisoned in Russia for over four years, was nearly on "death's door" before he was released this week, according to a hostage crisis expert who advocated for Gilman's release.

CIA Director John Ratcliffe is in Moscow, Russia for meetings, sources familiar with the situation told CBS News Tuesday.

The purpose of CIA Director John Ratcliffe's visit to Moscow this week was to warn Russia not to attack NATO member states, according to multiple