♪ brian: the manchester brother and father arrested. >> linked to terror networks worldwide. >> there were raids also overnight and this morning. 8 now are under arrest. and it is believed there was a substantial network supporting 22-year-old salman abedi. >> the alleged bomber spent three weeks in libya before returning to he can gland just days before the attack. >> when you have divided allegiance you live in the country but not of it. you don't commit to it the way you normally would and seduced to radical ideas. >> president trump has been pushing nato to become more relevant by taking on a greater counter terrorism mission. monday's bombing in manchester has stressed that mission to the top of the agenda. >> what took place is horrible. unthinkable. but we will win. 100 percent.