One of the accused accessed more than 6,000 Twitter accounts allegedly looking for information about critics of the Saudi government, according to court documents.
Meet Mike Lofgren, a long-time congressional staffer who describes himself as a political independent. He says the current discourse has turned his notion of a 'deep state' into a 'Frankenstein.'
Taylor, brought in to run the U.S. mission in Kyiv after the previous ambassador was recalled early, described a White House strategy to pressure Ukraine in exchange for political help.
Tehran says it will start injecting uranium gas into centrifuges, the latest in a series of breaches since President Trump's decision to abandon the nuclear deal and impose economic sanctions.
Sondland, a Trump donor who became a comparative newcomer to diplomacy, has been described as central to the president's strategy to pressure Ukraine's government to conduct political investigations.
Career diplomat Volker was described as being one of "three amigos" deputized to run a shadow foreign policy for Ukraine. He has stepped down from his role at the State Department.
The president's adviser is facing charges that he allegedly lied to Congress and obstructed an official proceeding. Stone has pleaded not guilty and said he has done nothing wrong.
Having already axed the INF missile control treaty with Russia, the Trump administration now has two more defense pacts in its sights: the Open Skies and New START treaties.
Marie Yovanovitch was recalled from her position as U.S. ambassador to Ukraine earlier this year amid what she called a "concerted campaign" against her, led by President Trump.