good to see. >> arthel: the pentagon is investigating an insider attack at eastern afghanistan. three americans soldiers were killed. another windy. the taliban claimed responsibility senate infiltrated the afghan army to carry out the attack. we have details from the mideast bureau. >> insiders attack continue to plague the mission in afghanistan with more than 90 green on blue attacks were afghan soldiers attacked their international training partners taking place is 2008. the latest came and where u.s. troops are fighting alongside afghan soldiers battling isis. the same area where the u.s. recently dropped its largest non- nuclear bomb on a series of isis tunnels. however, the taliban claimed credit of this weekend's attack that killed three u.s. special forces soldiers. it's not clear if he was connected to a tele- banner just a disgruntled afghan soldier which has often been the case. it comes as they are contemplating sending an