three ys of natnal mourng ha now beedeclared at t eu headarters i ussels, fls are flng at half mas have been a great many reactions from all across the world. a moment of silence held here in france today. the national assembly gathered for its daily session. we have been hearing from president francois hollande. he convened a special emergency security meeting at the presidential palace earlier. take a listen to what he had to say. : terrorismollande has targeted belgium, but it is europe that has been hit. and it is the entire world that is concerned. we need to take this terrorist threat seriously. this attack comes after others. paris was particularly targeted last year in january, and then in november. other continents were also hit. host: francois hollande speaking earlier on. let's take you to some live pictures coming to us from havana, cuba. we can see air force one, the president's plane, on the runway, just about ready to take off. barack obama has wrapped up in historic visit to cuba -- an historic visit to cuba, the first time a sitting president has visited the communist n