Ill ask the House Homeland Security chairman about the threat of similar attacks at concerts and other crowded events here in the United States. We want to welcome our viewers of the United States and around the world. Im Wolfe Blitzer youre in the situation room. Two major breaking stories unfolding this hour with a terror attack in britain with the Russian Investigation here in the United States. Tonight damaging new testimony by the former cia director john brennan been the trumps camp contact with russia. Brennan revealing for the first time that he grew worried last year that moscow was trying to influence members of the Trump Campaign to act on its behalf. The Senate Intelligence committee is keeping alive the threat that it will hold Michael Flynn in contempt of congress for defying a subpoena. But first the panel says its issuing new subpoenas for flynns businesses because businesses can invoke 5th amendment rights as flynn is promising today. The national Intelligence Committe