Let us suppose, hypothetically, that the history of Christianity was quite different. Imagine if Jesus and His followers had been exiled from Jerusalem by the Jews. Then, in the nearby city, Jesus amassed an army and laid seige to Jerusalem, conquering it over a series of three battles. Then Peter, Jesus’ first successor, begins a war against not only the province of Judea but against the whole of the Roman empire that is continued by subsequent successors for the next 1000 years.
If this *were *the history of Christianity, one would have a very difficult time explaining how Christanity is a religion of peace and how references in the New Testament Scriptures to “struggles” did not mean “war” when the history of its founders indicate quite a different understanding.
Yet, this is the history of Islam. Muhammed and his believers are exiled from Mecca into nearby Medina during the hijira. While in exile, Muhammed builds an army and lays seige to Mecca, conquering it in a series of battles. Then, Abu Bakr, arguably the first of the “Rightly Guided Caliphs” - begins a campaign against the Byzantine Empire and this war is expanded and carried on by subsequent successors to the whole of the Middle East and even Europe for over 1000 years, if not more.
As Catholics defending what Scripture means, we always tell Protestants to look at what the first Catholics believed Scripture meant. When Islam is held up to the same measure, “jihad” as “internal struggle” does not hold up, nor is it entirely accurate historically.