The PKK is not mainstream Kurds.
In January 2004 the US Government announced that Kurdistan Workers Party (PKK) is a terrorist organization. The Coalition Provisional Authority, coalition forces and Iraqi security forces will treat the PKK as terrorists
http://www.globalsecurity.org/military/world/para/pkk.htm
Partiya Karkeran Kurdistan [PKK] (Kurdistan Workers Party)
"Established in 1974 as a Marxist-Leninist insurgent group primarily composed of Turkish Kurds, by the late 1990s the PKK had moved beyond rural-based insurgent activities to include urban terrorism. . .
"Since 1984 the separatist PKK waged a violent terrorist insurgency in southeast Turkey, directed against both security forces and civilians. . .
"The PKK committed numerous abuses against civilians in northern Iraq throughout 1997. For example, on August 4, five persons were reportedly kidnaped from the village of Gunda Jour by a PKK band. Iraqi Kurds reported that on October 23, a PKK unit killed 14 civilians (10 of them children) and wounded 9 others in attacks on the villages of Korka, Chema, Dizo, and Selki. . .
"In April 2002 at its 8th Party Congress, the PKK changed its name to the Kurdistan Freedom and Democracy Congress (KADEK). . .
"In January 2004 the US Government announced that Kurdistan Workers Party and its aliases, the Kurdistan Freedom and Democracy Congress and the Kurdistan People's Congress were terrorist organizations that were designated as such under US law. The Coalition Provisional Authority, coalition forces and Iraqi security forces will treat the PKK/KADEK/Kongra-Gel as terrorists. . .
"Ankara claimed that about 2,000 Kurdish fighters had crossed into Turkey from hideouts in mountainous northern Iraq in early June 2004." [End excerpt, my emphasis]
Turkey has "invaded" mountainous northern Iraq chasing the terrorists a few times before.
On the other matter, Kirkuk, where is the proof that Turkey intends to "take" Kirkuk? Turkey is doing business with the mainstream Kurds.
I don't support the PKK. they are indeed terrorist.
More than a year ago the press reported that Turkey’s foreign minister, Yasar Yakis, said that indeed Turkey had looked at the possibility that Turkey had a claim to Iraqi oil fields. Mr. Yakis reported that no such claims could be found, however.
google "Yasar Yakis" kirkuk
and take your pick of news items.
Are there recent news items reporting that Turkey now feels it has claims to the oil?