Dmytro Firtash, a billionaire oligarch, is perhaps the most enigmatic figure in the scandal that has played a key role in President Donald Trump’s impeachment.

Dmytro Firtash, the Ukrainian power broker whom the United States is seeking to put on trial, built his massive fortune on opaque gas trading with a Kremlin-controlled company.

Ukraine imposed sanctions on tycoon Dmytro Firtash on Friday for selling titanium products that allegedly end up being used by Russian military enterprises.

In federal court documents filed this week, the Department of Justice describes Dmytro Firtash, a former business associate of ex-Trump campaign manager Paul Manafort, as an "upper echelon ...

Giuliani associates Lev Parnas and Igor Fruman advocated on behalf of Dmytro Firtash as they pitched a gas deal, says a U.S. executive briefed on the meeting.

Somewhere near the heart of the Ukraine scandal is the oligarch Dmytro Firtash. Evidence has long suggested this fact. But over the past week, in a televised interview and in documents he supplied ...

The president’s personal lawyer and his associates met in a number of European capitals with associates of Dmytro Firtash, according to people familiar with the encounters.

NPR's Scott Simon interviews Time reporter Simon Shuster about Dmytro Firtash, a Ukrainian oligarch fighting extradition to the U.S. Shuster says he helped get dirt on the Bidens to Trump supporters.

Ukrainian oligarch Dmytro Firtash, who has been accused of links to the Russian mob, has lost his gas empire, according to the chief of Ukrainian state energy giant Naftogaz. "Deoligarchization.

Ukrainian oligarch Dmytro Firtash is pictured prior to a public hearing at the higher regional court in Vienna on February 21, 2017.

Dmytro Firtash is fighting extradition to the United States. His lawyers are the president's staunchest defenders.

Almost a fireman The son of middle-class parents, Dmytro Vasylovych Firtash, 54, served in the Soviet army from 1984 to 1986, according to U.S. government documents.