If they had, they would understand that special counsel Robert Mueller's indictment against those Russian officials for supposedly illegally meddling in America's presidential election doesn't mean squat. Instead, the media and the Trump critics have accepted the indictment as proof, even conclusive proof, that the Russians really did do what Mueller is charging them with doing.
Of course, it's not really Mueller's indictment. It's a federal grand jury that has returned the indictment. But, in reality, it's Mueller's indictment. He drafts it up and the grand jury dutifully signs whatever he presents to them. As the old legal adage goes, prosecutors can get a grand jury to indict a ham sandwich.
A prosecutor can say whatever he wants in an indictment. It's not sworn to. Neither the prosecutor nor the grand jury can be prosecuted for perjury or false allegations in an indictment.