war and on imgras igs. by sure that their conversation is a broad based conversation that focuses in large part on trade, on the economy and on the bilateral relationship moving forward. i think that's a really important point that you bring up. certainly one of the key items on the president's agenda when he comes to visit here. >> thank you very much for the latest from mexico city. now to the investigation in the boston marathon bombing. we are learning new details on who the three new suspects are and why they were allegedly motivated to help the sigg bomber, suspected bomber, dzhokhar tsarnaev. the father of one of the new suspects, dias kadyrbayev described his son as being very caring. he said what i can say about my son. he was a straight a student at school. he was really good in math. he is a great helper. likes to help people even when people don't ask for help. but he feel they do need help, he would help people always. let me go to michael isikoff.