You meant to ask, "when will the world end?"
The world will not "end." The age that we live in WILL end.
A one world government will be declared, and with it a one world leader. The one world leader will declare a seven year peace treaty between Israel, and the entire world. Israel will depend upon this treaty in order to survive, as it will have destroyed the Mosque of Omar (the dome of the rock) and rebuilt Solomon's temple
Seven years after the one world leader declares the peace treaty between Israel and the world - the true king, the son of God Himself will return.