The Dajjal is the forth Beast (antichrist), aka Roman Catholic Church.
And the leader is pope.
When a pope bring peace in Middle East between Israel and the rest, and the same person visit Saudi Arabia Kingdom Palace, it's him.
The peace they bring in Middle East is a false peace, as you can see that peace is came from war and blood, with a lot of heavy emotions among the survivor. The Iraqi War, Syria, Egypt, Libya, etc.
Btw, in this world there's no bad person, but ignorant or stupid person. Everyone are good person, it's just so complicated. Including the so called Dajjal.