iran. has many people in this part of the world concerned. meantime, there could be extented stay in iraq for american troops. national security correspondent venner if griffin connects those dots. >> improvised rocket controlled munitions made in tehran. trained by militia in iraq and placed on the back of flatbed truck. the target, u.s. military personnel and the bases as the remaining forces prepare to leave iraq by the end of december. 15 americans were killed in june. the deadliest month for u.s. personnel serving in iraq in more than two years. >> our military commanders in isle rack are worried about irarian influence growing in iraq. >> in baghdad, iran prime minister welcomed iran vice president and 170 iranian companies who came to lobby for lucrative business contracts. just a day earlier, u.s. ambassador jim jeffrey on a trip to open the new u.s. consulate in basra warned u.s. commanderrers are seeing more lethal and accurate weapons flowing into iraq from