The Quran directs Muslims to conquer the world, establish the Caliphate governed by Sharia Law. They can use Taqiyya to further that goal.
Yes. Both Taqiyya (deceiving the Infidel) and war/terrorism (armed assault and killing of the infidel) are seen as sacramental observances of Islam for all Muslims. For devout young & fit male Muslims capable of the 2nd (war against infidels) it becomes a religious obligation.