I had reminded (you) before as well that the usurper regime of Israel and its aims are a great danger for the Muslim countries and it is feared that if the Muslims would give them time, the opportunity will be lost and it will be hard to put a check on those plans. And since the danger is aimed at the very foundation of Islam, it is incumbent on the Muslim nations in particular, and on other Muslims in general, to remove this source of corruption by whatever means possible and do not refrain from helping the defenders. It is also permissible to expend from the Zakats and other alms prescribed by law for this issue of vital importance.
Sahifeh, vol. 2, Page: 200