Then how come the world has gone long periods without suffering from Islamic terrorism?
Get ready for more of it too. Lots more.
Since its crafting together by its insane, mass-murdering, pedophile-pirate, false-fuerher founder, from evil's scraps and Babllon's cast-off "god," islam has been raping, sexually-mutilating, looting, plundering and mass-murdering.
That has never ceased from day one -- and for a time even enlisted the pagan-heathen pantheist Hitler's Germans and their then modern means of mass-murdering to its cause and to its actions and activities.
Radical islam is The Beast!
"Moderate islam" is its Trojan Horse!
Simple, the world hasn't gone long periods without suffering violence from Islam. Since their inception in the 6th Century they have ceaselessly attacked and devoured nations like an army of red ants. When the Crusades were first launched in 1098 the Mohammedans had already conquered 65% of all Christian lands, including North Africa, most of Spain, the middle east, parts of Byzantium - (the Eastern Roman Empire), and much of the Christian Balkans. General Charles Martel had to drive the Muslims from central France as early as 732 A.D. For many centuries they attacked and slaughtered Christians, took their lands, and forced the survivors to pay taxes to their Sultans. Islam threatened Western Europe and promised to turn the Vatican "into a horse stable". They attacked at Lepanto in the 16th Century with a massive Naval fleet, but were finally defeated and crushed by the Christian fleet under Don Juan. Found on their burning ships were 15,000 Christian slaves. But the Muslim Ottoman Empire continued to conquer and kill in the Balkans for a few centuries more. The only time in Islamic history that they left the world alone was when they were too weak to attack anyone.