Is jihad in the way of God a religious duty?

Fatwa, posted 4.22.2010, from Iraq, in:
Religious Authority: 
Ali al-Sistanti
Fatwa Question or Essay Title: 
Is jihad in the way of God a religious duty?

Jihad with an infallible imam or his special representative is a religious duty. This is a ruling of the sharia.

هل الجهاد في سبيل الله واجب؟ الجهاد مع المعصوم (علیه السلام) أو نائبه الخاص واجب وهو حكم شرعي.