Turks will be in that war. But I think our borders will not be the same at those times. (Bigger or lesser) Thet will be one of the reasons.(And energy routes will affect this) Or we can say; if our borders changes that will trigger a huge war. It will be a WW? I dont know.
WW1 was a "how can we share Ottoman territories" war. WW2 has tons of reasons!(Hitler himself not a reason)
But WW3 will be much more diffirent than other wars. It won't be a "Capture these territories" war. It will be a "rule their economy", "rule their political order", "rule their mind" war. Some territories will be used as outpostes and there is no need to connect gained territories. Like Iraq and Afganistan, USA dont need to take territories between them.(For example, they are trying to take control of Iranian political order)
Look at Ukrain, Georgia and other countries which are conrtrolled by colored revolions. And how Georgia attacked Russian territories. Attack was not succesful but success is not important. Important thing is that; Georgia, a country politically ruled by USA has started a mindless attack to Russia. Mindless is important word here. It means USA has a power to say "If I want them to attack you, they will attack without questioning.
A war like this can continue very long time. Generally will be not a real war, much like an intelligence war. But sometimes will be a real war where real weapons are used. This will happen rarely but when happens it will be a real mess. (Look at Iraq)
I think a war like this has started 10-15 years ago. At low density... I guess it will be diffirent in 10-25 years.
And remember that "WAR STARTS WHEN YOU CANNOT DO POLITICAL MANEUVERS!".