The prosecution in the trial of Roger Stone on Wednesday painted President Donald Trump¡¯s longtime adviser as a liar in a criminal case stemming from former special counsel Robert Mueller¡¯s probe that detailed Russian meddling in the 2016 U.S. election.

After a 12-member jury was selected, opening statements began in the trial in federal court in Washington. The 67-year-old veteran Republican political operative ¡ª a self-described ¡°dirty trickster¡± and ¡°agent provocateur¡± ¡ª has pleaded not guilty to charges of obstructing justice, witness tampering and lying to the U.S. House of Representatives Intelligence Committee.

Stone has been a friend and ally of Trump for some 40 years.