Good evening from New York, I'm Chris Hayes.

Today, Israeli defense forces began a new ground invasion into the northern part of

the Gaza Strip.

It is unclear if this is the anticipated full-scale ground defense of the idea of as long

the threatening, following a series of vicious terror attacks by Hamas forces against Israeli

civilians, men, women, and children 20 days ago.

Hamas will pay for its crimes against humanity.

Hamas will pay for slaughtering our people.

And tonight, we are starting payback.

We are bringing justice to this terrible, despicable, disgusting terrorist group.

And they will pay for their crimes.

And once again, not just Israel will be better up afterwards, but the people of Gaza will

be better off without them as well.

Those comments from a senior adviser to Israeli Prime Minister Benjamin Netanyahu sound

definitive, but there's still a lot we don't know right now.

There have been heavy Israeli bombardments throughout the day in Gaza, and what appears

to be an increase from the days, hundreds of targets in just a short period of time.

The IDF then said it is increasing its ground operation, including a targeted raid in northern

Gaza, which it calls preparations for the next stages of combat.

Part of the reason we do not know much is because we currently have no way at all to communicate

with people on the ground in Gaza, the two million people that live in that area.

We cannot reach our own crews in Gaza, the people we work with on the ground, the reporters

...