Here is the first full video from the 9/11 compilation.
Robert Spencer explains the difference between ISIS and whatever else has transpired in modern times. This new call to serve Allah supersedes any previous (and defensive) iteration such as al-Qaeda.
Victory through obedience to Allah. He is the cause of their victory, and victory comes because they are obedient to his commands.
It is not they who kill, but Allah who kills through them..
This is how the true Islamic State functions: offering honor and glory to Muslim soldiers by the killing of apostates.In this case, Shia Muslims are the apostates and must especially be killed by the true followers of Allah.
The ISIS video is the call from Allah to his soldiers world-wide.