First Seal

 1 And I saw when the Lamb opened one of the seals, and I heard, as it were the noise of thunder, one of the four beasts saying, Come and see. 2 And I saw, and behold a white horse: and he that sat on him had a bow; and a crown was given unto him: and he went forth conquering, and to conquer. Rev 6:1-2 (KJV)

This is the Antichrist, finally released upon the world. He is a political leader (conquering and to conquer, vs. 2). We see a bow, but no arrows, meaning he conquers at first through peace treaties and alliances.

The Tribulation itself will start when he signs a peace treaty specifically with Israel, one he has no intention of keeping. The peace treaty will involve many nations.

And he shall confirm the covenant with many for one week: and in the midst of the week he shall cause the sacrifice and the oblation to cease, and for the overspreading of abominations he shall make it desolate, even until the consummation, and that determined shall be poured upon the desolate. Dan 9:27 (KJV)

 From the moment the peace treaty is signed, there remains only seven years left until the Lord Jesus Christ returns. The signing starts the countdown.

 The Antichrist will pass himself off as a Messiah, but will really be a false Christ, and the world will worship him. Compare his appearance with the Glorious Appearance...

 The Antichrist...

 2 And I saw, and behold a white horse: and he that sat on him had a bow; and a crown was given unto him: and he went forth conquering, and to conquer. Rev 6:2 (KJV)

 The Lord Jesus Christ (the REAL Christ)

 11 And I saw heaven opened, and behold a white horse; and he that sat upon him was called Faithful and True, and in righteousness he doth judge and make war. Rev 19:11 (KJV)

 3 For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape. 1 Thess 5:3 (KJV)

 The world will believe the Antichrist will bring them peace, and will even justify his actions when he breaks his own treaties. The world will worship him. Literally worship him as a God.

 Sound unbelievable? It's not. Satan now knows he can place a man in power and people in these modern times will indeed worship him, if the media gives him the right spin.

 The Antichrist will conquer nations, either by intrigue, political deals, peace agreements, or outright war. There is no doubt.