A top Kremlin official said President Donald Trump had launched an "act of war" against Russia with fresh sanctions on its largest oil companies and the cancellation of a proposed summit with Russian President Vladimir Putin.

U.S. President Donald Trump has done a turnaround on sanctions against Russia, taking aim at Russia's two biggest oil companies and the billions of dollars they reap for Moscow's war against Ukraine.

As a Ukrainian, I’ve seen firsthand how Russia has learned to emulate American soft power for authoritarian ends.

The Kremlin may have convinced itself that US President Donald Trump didn’t have the stomach to apply real pressure on Moscow to end the brutal conflict in Ukraine.

Soaring fuel prices and refinery shutdowns leave pumps empty across Russia, with the Kremlin warning gas station owners not to raise prices.

At least six people were killed overnight shortly after President Donald Trump said he didn't "want to have a waste of time" holding a summit with the Russian leader.

Russian state nuclear energy giant Rosatom signed a $25-billion deal last month with Iran to build four nuclear power plants in the country, which suffers from electricity shortages and currently has only one operating nuclear power plant, built by Russia in the southern city of Bushehr.

Hungary’s Prime Minister Viktor Orbán was delighted to learn last week that Russia and the United States had chosen his country as the venue for another summit on ending the war in Ukraine.

President Donald Trump canceled his planned meeting with Russian President Vladimir Putin in Budapest, Hungary, due to insufficient progress toward peace negotiations, the White House said.