Turkey's defense minister has asked his American counterpart that the United States end its support for Syrian Kurdish fighters and remove them from a USA -backed Syrian Democratic Forces, or SDF, that if fighting the Islamic State group in Syria.
Turkish National Defense Minister Nurettin Canikli met on Wednesday his US counterpart James Mattis in Brussels.
Tillerson arrived in Turkey on Thursday for two days of what officials have said would likely be uncomfortable discussions between the allies, whose relations have frayed over a number of issues, particularly US support for the Syrian Kurdish YPG militia, seen as terrorists by Turkey.
-Turkish clash in Syria loomed over Thursday's meeting between the top American diplomat and Turkey's leader as the two North Atlantic Treaty Organisation allies scrambled to ease some of their worst tensions in years.
"We demanded this relationship be ended", Nurettin Canikli, Turkey's defence minister, told reporters in a briefing in Brussels on Thursday.
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Mattis spoke with his Turkish counterpart Nurettin Cenikli on the sidelines of a North Atlantic Treaty Organisation conference in Brussels on Wednesday. Turkey acknowledges the YPG as the outlawed Kurdistan Workers' Party's (PKK) extension in Syria and has been fighting against the group in the Afrin district of Syria since January 20.
"We are not disappointed, but the amount was less than expected", he added.
A Turkish base in Iraqi Kurdistan came under attack on Tuesday, a witness and the rebel Kurdistan Workers' Party (PKK) said, without claiming responsibility.
There is still no United States ambassador to Turkey after the departure of John Bass previous year, and it was only in December that the two sides ended a row following tit-for-tat suspensions of visa services.
"We demanded this structure be removed from SDF", he said.
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"We have reiterated our expectation that the USA should work together with its ally, Turkey, against terror organizations and not with terror organizations", he added.
The objective of this scenario would be isolating and putting Turkey into a hard situation by resurrecting ISIL in northern Syria, Bozdağ said.
But Cavusoglu warned Washington that ties were at a "critical point" where relations would "be fixed or... completely damaged". However, Tillerson later said that Washington had "never given heavy arms" to the YPG and there was therefore "nothing to take back".
Meanwhile, Deputy Prime Minister Bekir Bozdağ urged that Turkey may be subject to fresh accusations by the global community that its Afrin operation would help the resurrection of ISIL.
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