It's today explained, I'm Noel King.

Volodymyr Zelensky has impressed the world with his steely resolve during Russia's invasion.

Ukraine's Minister of Defense is a different personality type.

Earlier today, when a shipment of American weapons arrived in Ukraine, Alexei Reznikov

tweeted, thank you to my American flag emoji, colleague and friend, at SecDef Lloyd

J. Austin III for these powerful tools, exclamation point, summer will be hot for Russian occupiers

and the last one for some of them.

Reznikov is extra and I recommend a follow.

The American weapons he's referring to come at a crucial time.

In Ukraine's east, Russia is attempting to grind cities into submission and it is advancing.

And those American weapons?

Well, there are some problems.

It's coming up on today's explained.

From the start, there has been something notable about the war in Ukraine.

This is not an army, only fighting another country's army.

Ukrainian volunteers, people who are not in the armed services, make up an enormous part

of the fighting force.

The bulk of those people, they are civilians, they are volunteers, they have a vast range

of training in terms of whether they've only had a few days of training, some have had

several weeks of training, and they also have a wide range of equipment, whether that's

heavy arms, anti-tank weapons supplied by the west, or just going into battle with rifles.

You've got college students, you've got lawyers, you've got doctors, you've got musicians,

...