ukraine and we also have to recall that the reason there's a unified and prosperous europe is because enormous sacrifices were made on behalf of ideas and prips. s and if -- principles and if those principles of territorial integrity and sovereignty start getting ignored, then that carries as cost for -- carries a cost for europe and the world. thank you. >> all right. there they are the president of the united states and the prime minister of italy wrapping up more than one hour news conference during which they went through several major issues. welcome our viewers in the united states and around the world. i'm wolf blitzer reporting from washington. from iran to libya to economic