Donald Trump Jr. stayed out of his father's Washington to run the family business, but he keeps getting drawn back into special counsel Robert Mueller's investigation into the 2016 presidential campaign

Trump Jr. was at the center of an infamous June 2016 Trump Tower meeting with a Russian lawyer offering dirt on Hillary Clinton. Now, a new revelation places the younger Trump in another meeting in the Manhattan tower with a business executive offering potentially illegal assistance from the crown princes of Saudi Arabia and the United Arab Emirates for Donald Trump's presidential campaign.

Other participants in the newly disclosed meeting in August 2016 were an Israeli social media specialist and the former head of the Blackwater private security firm, who helped arrange the meeting, according to a report in the New York Times.