A man shall not be established by wickedness: but the root of the righteous shall not be moved. -Proverbs 12:3, KJV

I can already hear what some people are saying:

If a man can’t be established by wickedness, then why do so many tyrants, despots, and fearmongerers take power?

The short answer is that they have effectively sold their souls to the Devil.

And the devil, taking him up into an high mountain, shewed unto him all the kingdoms of the world in a moment of time. And the devil said unto him, All this power will I give thee, and the glory of them: for that is delivered unto me; and to whomsoever I will I give it. If thou therefore wilt worship me, all shall be thine.
Luke 4:5‭-‬7

Here is the kicker, though: we know that their foundation is weak. Christ is the firm foundation on which stand.

These leaders are like trees growing in dry, drought-wrought land. They seem strong and powerful, but when storm clouds come, they will be easily uprooted.

As Christians, however, we are grafted into the strong Root of Jesse.

And again Isaiah says, “The root of Jesse will come, even he who arises to rule the Gentiles; in him will the Gentiles hope.”
Romans 15:12

Then will appear in heaven the sign of the Son of Man, and then all the tribes of the earth will mourn, and they will see the Son of Man coming on the clouds of heaven with power and great glory.
Matthew 24:30

When Jesus returns (or these leaders die), then it will be known how faulty their foundations were, that God is the only true foundation to have. Their roots will be torn up, but our powerful God is our own root.

Get thee behind me, Satan: for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.
Luke 4:8