Eastern Ukraine braces for impact as Russia's new offensive gear is up.

And Ukrainian celebrate as the flagship of Russia's black sea fleet goes down.

John Burman here in Ferranderson, and as we come to you tonight, there is a major development

in the sinking of the Russian cruiser Moskva.

Two sources familiar with American and Western intelligence now tell CNN that the Ukrainian

claim that their missiles were responsible is believed to be credible.

As for just how credible, one other source familiar with the latest intelligence says

the US believes Ukraine's version of events, which Russia disputes, with, quote, medium

confidence.

Ukraine's national security adviser speaking to CNN's Fred Pleikin tonight had this

warning for Vladimir Putin.

That is our gift to him, and this is just the beginning.

This is just the beginning.

There will be more than one Moskva.

We'll have much more on this tonight, which has been a galvanizing development in the

war.

Also a nuclear weapons warning from Russia in response to Finland and Sweden now considering

joining NATO.

And there are multiple developments on Russia's building offensive in Eastern Ukraine.

A senior American defense official tonight says that Russian troops pulled from their defeat

in northern Ukraine are now appearing in the east.

And across the area, the shelling is already intense.

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