What's behind Vladimir Putin's brutal siege of the city of Mariupol?

For Mariapol in southern Ukraine, it's already a city in ruins after days of bombardment.

One reason is obvious, location.

It's positioned almost like a bridge between two Ukrainian territories that Russia already occupies.

But there's another possible reason.

In 2014, when Russia invaded those territories, it wanted to take Mariupol, too.

The separatists certainly had it in their targets.

But the Ukrainian forces did beat back the Russians and secured the town.

Something that some believe Putin never really forgave.

On today's explained, Vladimir Putin seeks revenge and an international law expert tries to determine the price that Putin should pay.

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Their skiff'd have ever received has to be a bike when I was younger, a pedal bike.

It was a sort of slick little road bike, and I remember it was all wrapped up.

It was so obvious what it was obviously, because nothing shaped like a bike and had a little ribbon on it.

I was a lifetanger and I'm still sort of big on cycling around my area now.

So, I feel like that won't change me a little.

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