The United States announced today that it is placing multimillion-dollar bounties on three leaders of the Kurdistan Workers Party (PKK), a Kurdish insurgent group.

During a visit to Turkey today, Deputy Assistant Secretary of State Matthew Palmer announced that the State Department’s Rewards for Justice program is offering money for information leading to the capture of the fugitives. The State Department has put the bounties at $5 million for Murat Karayilan, $4 million for Cemil Bayik and $3 million for Duran Kalkan.

Like Ankara, Washington has designated the PKK as a terrorist organization for more than a decade.

Why it matters: The US military alliance with the People’s Protection Units (YPG), a Syrian PKK affiliate, to fight the Islamic State (IS) in Syria has outraged Ankara. After the Turks ousted the YPG from Afrin earlier this year, Ankara and Washington reached an agreement to forestall a similar offensive in Manbij by reaching a compromise to jointly patrol the city. But in recent days, Turkey has resumed shelling YPG positions in northern Syria.