News flash: we've been fighting it for 1,400 years. It's just that the modern political elite is in denial. Political correctness keeps them there.
On a related note, it's easy for us Christians to harbor a spirit of revenge when we reflect on the atrocities ISIS is currently perpetrating against the defenseless civilian population in Iraq, which includes Muslims. Revelation 6:9-11 reflects a righteous Christian desire for retribution, and I for one would love to see ISIS destroyed. At a minimum, the West should to its best to arm anti-Jihadist forces everywhere.
But we must be aware of two things: 1) the blood of the martyrs is the seed of the church; and 2) there are stories emanating from all parts of the Islamic world not only of disaffection with Islam but of conversions to Christianity. And because Christian missionary activity is not allowed in Muslim lands, Muslims are coming to Christ by reading bootlegged Bibles and from visions received from heaven. I don't know the provenance of this video and so I'm a little hesitant to post it, but, his tears might be a sign of authenticity. Even if fake, it is reflective of what indeed seems to be happening among Muslims:
Like the Calorene solidier Emeth in The Last Battle, Muslims like the man in this video are finding Christ, though in the most unlikely of places. God knows the hearts of his elect, like he knew the heart of Cornelius, another unexpected member of the Church who became so because of a vision received from God. He will save them missionary or no missionary, and the current horror just might prove to be, for many Muslims, the catalyst of their salvation.
That being said, if the Lord so tarries, we will indeed be fighting radical Islam for another hundred years, and the liberals who constitute the political elite in the Western world will have to be removed from power in order for us to effectively fight it, because they simply aren't able to man up. Their day has come and gone.
Behold, the need for a new Crusade is suddenly upon us.