the casualties came in the outhern province of helmond.pdates say the victims would only train, advise and assist missions with forces when they come under fire. he added there may still be americans on the ground engaging the enemy in support of afghan forces. check points near an oil port in libya have come under a second day of attack from the islamic state group. this according to a libyan security spokesman. he added that an oil storage tank has always been set on fire. the militants have killed nine security guards and wounded more than 41 since monday. our expert has more on how the islamic state organization's members in libya are linked to the main group in iraq. >> we know that the links are very strong. know that islamic state has issues on libya since 2013. we know that many libyan fighters were in the ranks of islamic state before it became the islamic state in its most recent version if i may say so, joined the fight in syria since 2012. there is also an historical level about all this. we know that libyans are very involved

we're told, in this fight, the taliban, this is a taliban-controlled area in southern afghanistan in helmondm, thank you. >>> joining us is bob menendez of new jersey, a former chairman of the senate foreign relations committee. senator, thank you very much for joining us. i want to get to all of these issues. very quickly, the fbi is saying that they are missing 18 minutes of the terrorist movements in san bernardino. they are working on the assumption that this was isis-inspired, not isis-directed. what are you hearing? >> i don't know much more, wolf, than what you've reported. they are trying to figure out what those 18 minutes represent in terms of movements. and i believe that in time they will, with the help of the community at large, hopefully plug in that time. the real question for me has always been, is this isis-inspired or isis-directed and it seems at this point they are moving in the direction of isis-inspired. isis-directed would have been a game changer. still, a dangerous set of circumstances with lone wolf activities here in the united states and abroad. >> and they are tr