... "This is a a war but it is not a war of religion"...
(Pardon the heavy snip). I think the Pope has a real problem on his hands, in that there are followers of his who are hostage to Islam and being slaughtered.
However, I agree this is more than a war of religion. It is a war of coming of age for humanity, of realizing no truths are totally "truthy," of needing to accept the blasphemous: no religion/myth/dogma is universal. Be it fundies in the US, Islamists, or nationalists, the recourse to myth is constant, and the rejection of evidence-based reasoning pathological. In this sense, joining forces with any of the other truculent truths, as in the case of Trump, only guarantees the problem goes unidentified and will come back to haunt in whatever absolutist form the religious or political nonsense takes next.
Most profoundly, we tend to mistake our models of reality as being wholly and unreasonably true, faithful and eternally true, when they are approximate and provisional. Good enough to do science, but not written in stone.
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All that said, I came across a fairly brief overview of Islamic teachings by a young woman who seems to know what she refers to on Youtube today.
Most decidedly not a simplistic rant. She consistently cites chapter and verse in both the Koran and the hadith to calmly make some rather devastating observations. I suggest readers force themselves to sit through the scriptural account of what was done, under Mohamed's direct eye and command, to a tribe in Medina.
I must admit, I've been avoiding looking at the actual content of Islam for some months now, maybe a year or more, as I cannot help but find it astoundingly, profoundly evil. It is very hard to escape the observation that there is Mohamed's Islam, a horror show, and Muslim apostates who do not follow his example, but no true "moderate" Islam.
Mohamed was a warlord; there was, by the end of his ministry, no moderation in his own words and deeds, which are the only true example of how to follow the teachings in the Koran. To me, this makes apologists for a "peaceful" Islam suspect as either deluded wishful thinkers - best case, or willful obfuscators with a clear agenda - worst case.
Neither offers any way forward for dealing with very real threat of, let us summarize the words and deeds of Mohamed himself as "Islam," when they are actually put into force or imitated.