fascinating discussion. a senior white house official says the world is less safe because of this mueller investigation. we are talking to a member of the senate foreign relations question. does he agree. >> new information under the scope of russia's use of social media to meddle in the u.s. election. facebook estimates more than half of the total u.s. voting population was exposedp or could have been exposed by their estimate of the numbers there. plus, ten minutes was all we had but cnn gets an exclusive look at the site of the deadly attack in niger that killed four u.s. troops. olay regenerist shatters the competition. hydrating skin better than prestige creams costing over $100, $200, and even $400. for skin that looks younger than it should. fact check this ad in good housekeeping. olay regenerist. ageless.