We have to be careful to assume that our enemy is subhuman. But it is very hard to suppress the enemy or take his land if we do not do it. We need to look good in our own eyes and the eyes of others.
When Americans were taking land from Indians, Indians were exactly as subhuman, savage and evil.
Is there a more humane or godly way to conquer? Maybe making the vanquished into subjects and mingling with them (as Catholic Spaniards did in Latin America) is superior. But one has to have moral strength for that.
You must understand these radical nuts have been directed by God to detroy Israel and all who are not Muslims as themselves. They have been brainwashed by years of being taught this is their mission and purpose in life. They will be destroyed, or they will destroy us! There is no such thing as being rational with these corrupted to the bone heathen savages. This is the only solution! We are at war and war means destroy the enemy. How did we defeat Japan? By destroying them and teaching them how to be civilized human beings. Today, they are our best friends! Mingle with these heathen and they will sever your head from your torso my friend, where have you been for the past few years?
The Spaniards easily conquered the Aztecs and the Incas, et al; because up to that period of time, there were no horses, pigs, cows, and other domestic animals on the continent which had pre-innoculated them to have resistance or immunity to certain diseases.
Perhaps the Indians were savages and subhuman and evil.
Maybe, but they were not going out of their way to disrupt the world by terrorizing innocent people everywhere.
I do not care for your analogy that American Indians were as despicable as are the real sub humans who nowadays go by the name Ayatollah, Imam, or whatever leadership nomenclature of that rotten cult.