Happening now Ukraine and Russia trade attacks and clash over the fate of some of

their most advanced weapon systems. We'll go live to the war zone as Moscow

stands by its claim that it hit a critical

U.S-made Patriot air defense missile system.

Also tonight President Biden and congressional leaders wrap up a new round of talks

without a deal on raising the nation's

debt limit. The president speaking out about the meeting just a short while ago as

he scraps part of his overseas trip to keep the negotiations going.

And a very disturbing new security lapse

by the US Secret Service, an intruder entering

the home of Biden's national security Advisor Jake Sullivan undetected.

We're taking a closer look at the growing threat to top American officials.

Welcome to our viewers here in the United States and around the world.

I'm Wolf Blitzer, you're in the situation room.

Tonight Air Aid Sirens have been blaring in the Ukrainian capital of Kyiv, a day after a major

new air assault by Russia. Moscow claiming it hit a critical target overnight a U.S. Patriot air defense

missile system.

CNN Sam Kylie is on the ground for us in southeastern Ukraine.

Sam, first of all, what do we know about the strike by Russia and the fate of that Patriot system?

Well, last night, Wolf, the Ukrainians say that they shot down 18 different missiles.

These include the ultrasonic,

hypersonic, rather, Hinzal,

...