Iraq is helping Iran skirt US sanctions

"... The Obama administration is not eager for a public showdown with the government of Prime Minister Nuri Kamal al-Maliki over Iran just eight months after the last American troops withdrew from Baghdad.
Still, the administration has held private talks with Iraqi officials to complain about specific instances of financial and logistical ties between the countries, officials say, although they do not regard all trade between them as illegal or, as in the case of smuggling, as something completely new. In one recent instance, when American officials learned that the Iraqi government was aiding the Iranians by allowing them to use Iraqi airspace to ferry supplies to Syria, Mr. Obama called Mr. Maliki to complain. The Iranian planes flew another route...."