Why does Trump keep blaming Ukraine for getting invaded by Russia?

Very bad example.

For 3 years, Ukraine has been standing against world’s most brutal war machine — Russia. And Russia can’t break Ukraine. The Russians can’t break the Ukrainians.

Bad, bad example Ukraine is setting.

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This is why Ukraine that’s fighting back against mighty Russia is such a nuisance for Trump.

What if all other countries realize they need to fight back?

Trump doesn’t blame Ukraine for getting invaded by Russia — what he’s saying, is that Ukraine shouldn’t have defended herself, because Russia is “20 times larger”. And Trump is saying this because he wants to start invading other countries — Greenland, Panama, Canada — and he doesn’t want them to fight back. He wants them to surrender without a fight.

Why do some young mothers trick a guy into believing that they're pregnant and it's their child when years later they find out that it's not even theirs should he still pay child support or not?

This just messes up all Trump’s plans.

This is also about the trade war that Trump unleashed against the whole world, demanding that everyone comes and grovels before him and “makes a deal”.

Trump’s constant complaints that Ukraine “shouldn’t have started the war” mean exactly that — if a powerful country like the USA says they want your land and impose conditions, you should “negotiate a good deal” and live happily ever after.

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The best and most beautiful plans in the world.

That’s what Trump wants.