A Russian general is dead, killed in an explosion in Moscow.

Ukraine is apparently claiming responsibility.

This is, in a way, retribution or justice that Ukrainians have served to this person,

who, by all accounts, is a war criminal.

I'm Marco Wormon more on that brazen attack in Russia's capital.

Also a mass grave in Syria said to hold the remains of at least 100,000 people.

So many families, including my own, but my uncle could be in that mass grave.

My friends could be in that mass wave.

Plus, 10 years on, what happened with the thaw between the U.S. and Cuba,

and the two biggest economies in Europe

now share something new.

It's the first time.

There will be a day train

between our two capitals.

Bratworth's Meat Baguette.

All that and more today, here on the world.

This is the world. I'm Marco Wurman. My co-host Carolyn Beeler is out this week.

We begin today in Moscow, where an early morning explosion on a residential street killed a Russian general and his assistant. According to authorities there, the target of

the attack was Igor Karilov. He was the head of the Russian military's nuclear biological

and chemical protection forces and notorious among Ukrainians for his role in chemical weapon attacks

in Ukraine. Ukraine's security service claimed responsibility for the assassination, calling

Kirilov a legitimate

...