As I understand it, the prophecy is that when the state of Israel is fully unified once more, and the temple of Solomon is rebuilt, Jesus will return and the second battle of Armageddon will commence.
End of the world, rapture of the believers into Heaven, the whole bit.
It’s not all roses and rainbows: Thatcher was a chemical engineer, and the only thing she engineered while in power was the downfall of England as a world power.