“He [Mohammed] declared undistinguishing and exterminating war, as a part of his religion, against all the rest of mankindThe precept of the Koran is, perpetual war against all who deny that Mahomet is the prophet of G-d.  The vanquished may purchase their lives, by the payment of tribute; the victorious may be appeased by a false and delusive promise of peace; and the faithful follower of the prophet may submit to the imperious necessities of defeat:  but the command to propagate the Moslem creed by the sword is always obligatory [Islam is not a religion of peace], when it can be made effective.  The commands of the prophet may be performed alike, by fraud, or by force.”  President John Quincy Adams.

John Quincey Adams