The thing about it is if he appears as a person well liked by everyone we will KNOW he’s the AC.
As for the peace agreement, I’m not sure Israel will trust anyone. They’ll just be forced to go along.
And it could be that Israel is forced to go along, but I heard an interview with a pastor who goes to Israel often and he was speaking to some members of the military over there and he asked them how they would be able to recognize their messiah when he comes. The response? "He will help us to rebuild our temple".
I think the possibility is good that Israel (in their current secular condition) will be taken in like the rest of the world, so much so that they will believe that this guy is their messiah, and will be thrilled to go along with the "peace" covenant and will be quite enthusiastic about it.
And after the complete devastation to both Islam and that part of the world after the Psalm 83 war and especially after God Himself destroys five-sixths of the millions that attempt to invade Israel in the Ezekiel 38/39 war, many attitudes and worldviews will be much changed and many, many people will be very compliant and agreeable to some sort of "peace" accord.