The first indictment, under seal.

Nearly five months after the special counsel officially began his work, Mueller filed his first charge, accusing the foreign policy advisor to Trump's campaign of lying to the FBI. According to Mueller, Papadopolous told an Australian diplomat in 2016 that Russia had "dirt" on Hillary Clinton months before the Democratic candidate's internal campaign emails started leaking online.

As part of his plea deal with Mueller, Papadopoulos admitted that he discussed his Russia contacts with top campaign officials, including a possible meeting between candidate Trump and Russian President Vladimir Putin. The White House sought to distance itself from Papadopoulos before he was eventually sentenced to 14 days in prison. Papadopoulos's indictment and plea deal was kept under seal until Oct. 30, 2017. Read the full indictment here.