u.s. has proof iran was behind the tanker attacks. iran is still insisting world powers honor the obama a era nuclear deal. how does all this end. security studies president jim hanson, who led counter terrorism operations in the u.s. army special forces joins us now to discuss a little bit more. thank you for joining us this morning. what should our response be? >> i think at this point when you've got representative adam schiff admitting it was iran, we're past the point of assigning blame and we're onto what to do next. and one of the things people have said is it's not the u.s. responsibility to defend japanese tankers. well, travel through the gulf is a u.s. strategic interest. but more importantly, secretary pompeo said we will defend against iranian attacks against the u.s. and by them and their proxies a and in yemen the huthis shot down a u.s. reefer