While one part of the Mueller team has indicted Russian spies and troll-masters, another cadre has been spending its time focusing on how Middle Eastern countries pushed cash to Washington politicos in an attempt to sway policy under President Trump’s administration. Various witnesses affiliated with the Trump campaign have been questioned about their conversations with deeply connected individuals from the United Arab Emirates, Saudi Arabia, and Israel, according to people familiar with the probe. Topics in those meetings ranged from the use of social media manipulation to help install Trump in the White House to the overthrow of the regime in Iran.

Now, according to those same sources, the Special Counsel’s Office is ready to outline what cooperating witnesses have told them about foreigners’ plans to help Trump win the presidency. Two sources with knowledge of the probe said Mueller’s team has for months discussed the possibility of issuing new charges on this side of the investigation.

“If this is going to be unveiled, this would be like the surfacing of the submarine but on the other plank which we haven’t seen,” said Harry Litman, a former U.S. attorney. “I guess what Mueller has to date has turned out to be pretty rich and detailed and more than we anticipated. This could turn out to be a rich part of the overall story.”