I believe there will be a 3rd temple,by way of the man of sin establishing a 7 years covenant with the Jews,and possibly the Palestinians,which would be the hindrance to the nations coming together to try to achieve peace on earth,which also he wants to deceive the Jews to go along with him as the answer to their prosperity,for the Jews as a nation must come to the truth that Jesus is their Messiah,so God can further His plan of putting down the wicked,and the millennial reign to begin,and the devil wants to hinder that plan by getting the Jews to go along with him,and his occult agenda to cause them to believe the beast kingdom is of the truth,and God is not a personal God,but an impersonal God,which they call the God of forces.
That 7 years covenant will allow the Jews to rebuild their 3d temple,and they will go back to animal sacrifices,and in the middle of the 7 years covenant the man of sin will enter their temple,and tell them to stop animal sacrifices,and claim to be God,and their Messiah.
During the 7 years covenant,God will send the Jews 2 witnesses to turn their hearts to the truth that Jesus is their Messiah,and they will turn to God as a nation,and it will be the time that God brings Israel to the truth,and causes all who do not love Him to follow the beast kingdom.
The world under the rule of the man of sin,will attack the Jews,and that is when Jesus saves them,and defeats the world,and puts them down.It says that half of the city of Jerusalem is overran,and then the other half is saved,which could be the Jews split Jerusalem,which is part of them having peace with each other,which sounds like the Palestinian side is overran,and when they get to the Jews side they are stopped.