Happening now breaking news, President Trump and Russian President Vladimir Putin expected to speak on the phone.

The two leaders will talk about ending the war, notably missing from that conversation, Ukraine.

Cease fire shattered. Israel pounding Gaza with a wave of deadly strikes.

We have new CNN reporting live from Tel Aviv.

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

I'm Wolf Blitzer. You're in the Situation Room.

This is CNN breaking news.

And we begin with the breaking news. After weeks of relative calm, the fragile ceasefire between Israel and Hamas has collapsed.

The blistering sound of bombs rang across Gaza overnight, as Israel resumed deadly

air strikes on the enclave. According to the Palestinian Health Ministry, more than 400 people

have been killed and hundreds more wounded.

And Israeli official says the attack targeted mid-level Hamas commanders,

but a doctor in Gaza tells CNN that the majority of victims were civilians.

I lost count of how many patients, you know, I've pronounced dead myself, but it was at least

maybe 15 or 20 with just myself.

The majority are women and children.

The majority are women and children, I mean, I, I, I, just babies, like one, two, three

year olds just lined up four or five to a structure.

And many, many, you know, young women, entire families wiped out.

But the majority of cases that we've seen tonight are children.

All right, let's go live down to CNN correspondent Jeremy Diamond.

He's joining us from Tel Aviv. Jeremy, why did Israel

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