The risk of pushing border changes in the Middle East

Current borders in the Middle East are far from perfect. They were drawn mostly as "lines in the sand" through two world wars. Starting from the collapse of the Ottoman Empire in 1918 until the establishment of Israel in 1948, the borders in the region were also drawn through zones of influences over oil and gas fields.
There were similar effects in southeast Europe from the disintegration of the Ottoman dynasty, only there it took much longer - lasting until the disintegration of Yugoslavia in the mid-1990s.

Today the focus is on the Middle East. The U.S. occupation of Iraq and then the Syrian civil war have added to the instabilities of Israel, Palestine and Lebanon in the region, but in a much more widespread manner.

Not only that. The Iraq crisis led up to a Kurdish Regional Government (KRG) being formed in the north along the Turkish and Iranian borders and a de facto Shiite-dominated rule in the south, bordering Iran, the Persian Gulf, Kuwait and Saudi Arabia. 

Ten years later, the Syrian civil war has resulted in the potential for two separate and hostile border changes.

One of them is led by the Islamic State of Iraq and Levant (ISIL), the most violent terror organization of modern times claiming control over a third of both Syria and Iraq. The other is led by the Democratic Union Party (PYD) of Syria, which is linked to the outlawed Kurdistan Workers' Party (PKK) which has fought Turkey for Kurdish independence since 1984. With the advantage of being a ground force assisting both the U.S. and Russia against ISIL, the PYD-PKK now controls a region across more than 500 km of the Turkish border - from the KRG region in Iraq to the west toward the Mediterranean Sea. This is actually the area where they are fighting for...