66 AD to 70AD was the Great Tribulation. Jeremiah states that it is the time of Jacob's Trouble. It was the punishment of apostate Israel foretold by the prophets and also by Moses. It fulfills the things spoken by Jesus in Matthew 22, 23 and 24 as well.
Since there is no longer a Roman Empire (Rome was the FINAL world empire per Daniel), a future Great Tribulation is not only impossible, it makes no sense.
