Kurds in N. Iraq Receive Arms From Bulgaria

"Yes, the Kurds have this autonomous region and they're authorized to keep the pesh," one of the officials said, referring to the militia. "But arming themselves and bringing in weapons stealthily like that -- if I were the Iraqi government, I'd be pretty concerned."

While violence in Iraq has decreased markedly in recent months, political tension is rising as Iraqi leaders gear up for provincial and national elections scheduled to take place next year, and as they prepare for an era in which the U.S. military will have a smaller presence there.

Of the primary fault lines -- which include tension between Sunnis and Shiites and rivalry among Shiite political parties -- the rift between Kurds and the Arab-dominated Iraqi government has become a top concern in recent months. Senior government officials have engaged in a war of words, and Iraqi army and pesh merga units have come close to clashing.

"You could easily have a huge eruption of violence in the north," said Kenneth B. Katzman, a Middle East specialist at the Congressional Research Service in Washington. "Nothing having to do with the Kurds is resolved."

Because Arab Sunnis largely boycotted the 2005 election, Kurds obtained disproportionate political power in key provinces such as Tamim, which includes Kirkuk, and Nineveh. Both abut the Kurdish autonomous region. Kurds also control 75 of the 275 seats in parliament.

This year, violence broke out in Kirkuk amid political squabbling over an Arab proposal that seats on the Tamim provincial council should be divided evenly among ethnic Arabs, Kurds and Turkmens. In the end, Iraqi lawmakers had to shelve plans to hold provincial elections in Tamim because the sides were unable to reach a deal.

In August, U.S. officials narrowly averted an armed confrontation between an Iraqi army unit and pesh merga fighters in the town of Khanaqin, in Diyala province.

In recent weeks, Maliki and Kurdish leaders have exchanged sharp words over Maliki's creation of so-called support councils. Maliki has said the councils, which are made up of pro-government tribal leaders, are the central government's eyes and ears in provinces. But Kurdistan Regional Government President Massoud Barzani and other Iraqi leaders have accused the prime minister of using the councils to bolster Maliki's influence in areas where he has little political support. In a recent news conference, Barzani said Maliki was "playing with fire."

Iraqi President Jalal Talabani, who is a Kurd, recently sent Maliki a letter saying the money being spent on councils should go to the country's armed forces.

The pesh merga, which began as a militia controlled by powerful Kurdish families, fought Iraqi troops when Hussein was in power. Since the 2003 invasion, its primary role has been to patrol predominantly Kurdish areas in the north. However, pesh merga units were deployed to the northern city of Mosul in 2004 to help quell an insurgent uprising, and others were dispatched to Baghdad as part of the 2007 buildup of U.S. troops.

Recently, the Iraqi government has refrained from using pesh merga forces outside of the Kurdish region and has taken steps to replace predominantly Kurdish forces with Sunni and Shiite soldiers in Nineveh, one of the most violent areas in Iraq.

Central government officials recently bristled at Barzani's offer to allow U.S. troops to establish bases in the Kurdish autonomous region, saying the regional government had no authority to make such an overture, especially as Iraqi officials are calling for a gradual withdrawal of U.S. troops.

"There is a lot of tension," Kurdish parliament member Mahmoud Othman said. "Maliki and his administration are accusing the Kurdish authorities of violating the constitution. And the Kurds are accusing Maliki of violating the constitution."