search-and-rescue mission was launched but for many it was too late. >> my thoughts are first of all, with the victims and their families. it's an appalling thing that they have suffered. but i also want to say that this disaster underscores how dangerous it is to cross the channel in this way. >> reporter: despite that danger, more than 25,000 migrants have made the crossing this year, including more arriving in britain today. france and britain blame each other for not doing more to stop the flow. but tonight, both share blame in the tragic loss of life in one of the busiest shipping lanes in the world. authorities on both sides of the channel have warned it was just a matter of time before a tragedy like this was going to happen. french officials say there are women and one little girl among the dead. margaret. >> brennan: tragic. thank you, charlie. tonight, tributes are pouring in for jackson sparks, the young effort of of six victims killed by a speeding car that tore