The US president says he's "disappointed", after Ukraine's President Volodymyr Zelensky expressed surprise his country was not invited to Tuesday's talks in Saudi Arabia.

Among the veteran diplomats and national security advisers gathering for top-level talks between the U.S. and Russia, Harvard-educated Kirill Dmitriev cut a distinct figure this week. As Moscow seeks to match the Washington team’s dealmaking lineup,

U.S. and Russian officials met in Riyadh to discuss ending the Ukraine conflict. The discussions were deemed positive by Kirill Dmitriev of Russia's sovereign wealth fund. Dmitriev joined the Russian delegation meeting U.

Russian President Vladimir Putin and U.S. President Donald Trump could meet as early as this month, although a face-to-face meeting will take time to prepare, Kremlin spokesman Dmitry Peskov said on Wednesday,

U.S.-Russia relations have gone from nowhere to close engagement in a week, since Donald Trump called Vladimir Putin ahead of a putative summit.

Rachel Maddow assembles a collection of clips showing Donald Trump's strangely spooked reaction to questions about his contacts with Russian President Vladimir Putin, and ponders the political fallout for Trump as he realigns the United States against traditional friends and forges new ties with Russia,

Fox News senior White House correspondent Peter Doocy has the latest on President Donald Trump's world diplomacy on 'Special Report.'