'I think Trump with his current rhetoric is capable of lighting a litmus paper to start WW3. '
It is possible because no one can predict what Trump will do. All we can say is that from his statements so far, there is much less likely to be WW3 under Trump than the situation we have now with Turkey shooting down a Russian plane. Trump has said
“Turkey looks like they’re on the side of ISIS, more or less based on the oil,”
You won't hear that from puppets, only from Trump.
Under Trump, I don't think there will be WW3, but no one knows for sure what Trump will do.