If you thought Hezbollah was only an Israeli problem, think again. NY Times, Hezbollah Said to Help Shiite Army in Iraq:
WASHINGTON, Nov. 27 — A senior American intelligence official said Monday that the Iranian-backed group Hezbollah had been training members of the Mahdi Army, the Iraqi Shiite militia led by Moktada al-Sadr.
The official said that 1,000 to 2,000 fighters from the Mahdi Army and other Shiite militias had been trained by Hezbollah in Lebanon. A small number of Hezbollah operatives have also visited Iraq to help with training, the official said.
Iran has facilitated the link between Hezbollah and the Shiite militias in Iraq, the official said. Syrian officials have also cooperated, though there is debate about whether it has the blessing of the senior leaders in Syria.
The intelligence official spoke on condition of anonymity under rules set by his agency, and discussed Iran’s role in response to questions from a reporter.