You are correct. It is not that they are afraid though. When they are not in power they practice Dhimmitude. They play the good guy till they have power. Also, From what I have researched, one may lie in Islam in order to protect the religion of Islam, to protect himself from harm or his land, or to keep peace within his family and society. The Prophet said, “War is deceit” - Sahih Al-Burkhari Vol 4, Book 52, Hadith 269. It really comes down to this...if you are not an Muslim then you are an infidel, thus, they are allowed to lie to you because they are at war with you. You study this and you will see the Truth. Study it from all opinions and make an educated conclusion. Good Luck.