Read Jihad by Paul Fregosi. The book details all this and much more.
http://www.amazon.com/Jihad-West-Muslim-Conquests-Centuries/dp/1573922471
Exactly. None of this is new ... has been going on for centuries.
Also read:
Tamerlane: Sword of Islam, Conqueror of the World
http://www.amazon.com/Tamerlane-Sword-Islam-Conqueror-World/dp/030681465X
Tamerlane and his army were the ISIS of his day. All the things that are going on today (and worse) were done by Tamerlane in pursuit of his caliphate.
Read