Source: President's new personnel head tells agencies to look out for staffers disloyal to Trump; Bloomberg says women can be released from non-disclosure agreements; CNN examines medical docs Sanders released after heart attack;
Sources: Election security official told lawmakers Russia is looking to help Trump win in November; Source: President Trump upset he heard about intel conclusion on Russia from a House Republican; Warren slams Bloomberg as an "arrogant billionaire"; Sen. Bernie Sanders briefed by U.S. Officials that Russia is trying to help his presidential campaign; U.S. & Taliban agree to 7-day break in violence in Afghanistan;