You won't have a WW3 from this. But Turkey is totally dependant on Russian gas. Russia is Turkey's largest natural gas supplier, with Ankara buying 28-30 billion cubic meters of its 50 bcm of natural gas needs annually from Russia. Russia is also building a nuclear power station in Turkey.

These deals could be cancelled in Russian terms, and Turkey would have a very hard winter:

Turkey imports Russian gas primarily through two pipelines, one passing through the northwestern region of Thrace, the other entering Turkey from under the Black Sea.
"No gas entry from Thrace means the end of Turkey as that gas pipeline feeds all of Istanbul and the Marmara region. There is no alternative pipeline system that can bring this gas."