Nope I believe you have your events out of order. Armageddon happens at the second coming. The worlds armies
gather together to destroy the remnant of righteous Jews and in a futile attempt to prevent Christ from returning to earth Any attack on Israel before then would just be another war like those of 1948, 67 and 73, whether Iran will be involved is likely but not definite
Armageddon
The description is centered on Rev 16:1-21, vs 12-16.
The battle takes place between Israel and the Gentile nations. (assumed)
In order for this to happen, Israel MUST be restored. As it is NOW.
The effect of the vial being poured out (the withdrawing of God's blessings), is felt directly on the Euphrates River.
The waters represent the strength and power of the people in that area, not the literal drying of the river.
Since this battle has not happened yet, and we now have modern armies and air forces, the river is not an obstacle as it was in the past.
What prevented the armies of the kings of the east from attacking Israel was Iraq and Saddam.
Now that power is gone, "dried up", Iran can attack restored Israel.
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V 16, The armies of the kings of the east are lied to by the Dragon iron 4th beast nation leader (v 13).
He brings them to battle in the valley. The direction of the armies is seen.
The armies come across the Euphrates, they must pass through Syria (assumed), to get to the valley, as they are NOW.
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V 14, The battle involves the whole world armies (of the gentile nations), Russia?, Syria?, etc.?
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V 15, This event, is linked to the coming of Jesus by v 15. The resurrection/rapture coming, not the coming with clouds of armies at the dest. of Jerusalem in 70 ad..
The reason that it is the resur/rapt coming, is because of the hail in the 7th vial. All the events described can be symbolized to explain how it could be 70 ad, except for the hail (also see Rev 11:19 hail)
(also, after the 7th plague, men will enter the temple of God in heaven Rev 15:8)
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The event that happens before the 6 vial, is the 5th.
The darkness is poured out on the seat of the beast. The seat of the beast, dragon iron 4th beast nation, where the beast has his throne, Rome.
The darkness represents the withdrawing of blessings on that place, Rome.
Since Rome was blessed before the blessings were withdrawn, something must have happened to cause the withdrawing of God's blessings.
But what event would cause God to withdraw His blessings on Rome? (the opening of the abyss, and the REappearance of the dragon iron beast nation 1929) (5th trumpet).
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1929, darkness on Rome, when the Vatican becomes a nation again, 5th vial.
The forces of darkness drive Israel back to Jerusalem.
1967, Israel restored to Jerusalem, trib ends
9/11, the beginning of events that lead to the battle and the 7th vial.
The people of the Euphrates River region lose their power, dries up. (G.Bush and Saddam)
Iran, the kings of the east, brings their forces, along with the gentile nations of the world to destroy Israel restored to Jerusalem. (happening NOW)
The battle takes place.
The 7th vial.
The narrative ends and switches to a description of the harlot.