Operation Karbala Ten was a joint effort by Iran

Iran

Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

 and the Kurdish

Kurdish people

The Kurdish people, or Kurds , are an Iranian people native to the Middle East, mostly inhabiting a region known as Kurdistan, which includes adjacent parts of Iran, Iraq, Syria, and Turkey...

 rebels in Iraq

Iraq

Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

.

Because there was hardly any movement anymore at the southern front, the Iranians thought they could better break through in the Northern front in Kurdish Iraq. They broke through the Iraqi defense lines and surrounded the garrison at Mawat

Mawat

Mawat is a town located to the north of Sulaymaniyah and to the southeast of Lake Dukan in Iraqi Kurdistan.Mawat is a small town. It has been rebuilt to the south of Old Mawat...

. Though endangering the Iraqi oil fields of Kirkuk

Kirkuk

Kirkuk is a city in Iraq and the capital of Kirkuk Governorate.It is located in the Iraqi governorate of Kirkuk, north of the capital, Baghdad...

 and the pipeline to Turkey

Turkey

Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

the Iranians didn't get much further than this.

In April 1986, some 2,000 Kurdish Peshmerga held the city of Sulaymaniyah prior to the arrival of Iranian forces which took control of the city.http://www.dailykos.com/story/2006/10/25/261923/-History-of-Iraq:-19791989