Stone indictment: Is this all Mueller has, or is he closing in on Trump?

Many legal experts suspect that Mueller, who speaks only in court documents, has much more to say.

“Prosecutors never put all of their evidence into an indictment,” said Joyce Vance, a former U.S. attorney in Alabama and an NBC News contributor. “Just because this indictment doesn’t slap you in the face with a conspiracy doesn’t mean Mueller doesn’t have that evidence.”

Vance added, “Could this be the endpoint? Maybe, but this doesn’t look like a capstone indictment. It leaves too many un-pulled threads.”

Glenn Kirschner, another former federal prosecutor and NBC News contributor, went further:

“This is a conspiracy indictment,” he said. “He just left out the conspiracy charges.”