“Could we be closer to another world war?”
We are already in a world war, a widespread low-grade war, the intensity just hasn’t ramped up enough for you to recognize it as such. It started about 1,400 years ago. Consider how much violence is happening around the world - muslims are the cause most of it. The Russians and Chinese are another axis in this conflict. The West is only beginning to recognize the problem. In summary, the world is in a mess, but don’t worry - it will only get worse.
I don’t think there is any Muslim concentration large enough or extreme enough to start a general conflagration. We can look forward to many pocket wars and terrorist actions. As to what is going on within Islam, we only have to look at the history of Europe in the 200 years following Martin Luther’s declaration at Wittenburg. Consider how many Christians killed and were killed because they were Protestant or Catholic. Like Shia vs Sunni. Remember: “Those who fail to learn the lessons of history are doomed to repeat them.” I see big history lessons in our immediate future.