Threats from Turkey in the Syrian War
Turkey is a NATO country but there is evidence that one day, Turkey will withdraw from the NATO alliance. The recent order of the Russian S-300\400 missile system greatly irritated NATO, to the point that the US stopped its F-35 aircraft from being sent there as an upgrade. This widening disparity of interests will be tested in the future with the next military offensive by Turkey into Syria to remove the YPG Kurdish group.
They number in great numbers and armed with US weapons and others in the war against ISIS, which they were instrumental in defeating with US support. However, Turkey has always viewed them as an extension of a terrorist group they have fought with for decades. Thousands of Kurds live in Turkey and near the Syrian border and into Iraq. They want their own country to be carved out of the area they now possess, which is mostly in northern Iraq.
There's the rub. The US said it will defend the Kurds if the military offensive that is planned by Turkey is threatening the Kurds. The Turkish army is already poised for this attack only to be halted because of US concerns what the offensive may actually evolve into - an excuse for Turkey to eradicate Kurds from not just the 20 km border with Syria, but deeper into Iraq. It would be a a NATO country attacking a NATO country.
President Trump has threaten Turkey not to even think this. The sides have agreed only to create a joint command to control the coming Turkish offensive, but the alliance is ripe with ill will for this and other reasons. It would not take much for Turkey to go it alone, as they have threaten to do. Turkey has its own aspirations to regain territory once within their vast empire. They once owned much of Syria, Gaza, and Israel, this was during WW1 (1914-1918). This area was part of greater Turkey, so it is very likely similar thoughts may occur again.
President Trump has halted the ambitions so far, but it will not be long before there might be a Russian-Turkish alliance. If Trump is re-elected, this may not occur until after 2024, but if he is defeated, this sort of thing might happen beginning in 2021, because America's role in the Middle East is diminishing even though Trump is staunch supporter of Israel. Were Russia, Turkey, Iran, to attack Israel, when Trump is not in office, America might not come to the rescue.
President Trump's support of Israel, at all costs, and his warning to Turkey regarding the Kurds, may be stalling a major conflict, which is coming. What Turkey does in the next offensive which will happen, may also be delayed until after the next American election in 2020. Many of America's adversaries are now waiting to see what that election brings.