Russian lobbyist in Trump Jr. meeting spoke to Mueller's grand jury

"Lobbyist in Trump Tower meeting spoke to grand jury," by AP's Chad Day and Eric Tucker: "A grand jury used by Special Counsel Robert Mueller has heard secret testimony from a Russian-American lobbyist [Rinat Akhmetshin] who attended a June 2016 meeting with ... Trump's eldest son," plus Jared Kushner and Paul Manafort.

• Why it matters: "The revelation is the clearest indication yet that Mueller and his team of investigators view the meeting, which came weeks after Trump had secured the Republican presidential nomination, as a relevant inquiry point in their broader probe into Russian interference in the 2016 election."