Kerry Kahn

Iran is sustaining relentless air assaults.

Israel says overnight it hit numerous command centers of the regime's security apparatus.

U.N.

's defense secretary says it's obliterated Iran's navy and has near total control of Iranian airspace.

But in Israel, the number of missiles and drones from Iran have dropped dramatically.

Although yesterday, a cluster missile from Iran did spark fires in several areas and several sites in central Israel.

Leaders here are moving away from talking about regime change as the goal of the war.

Prime Minister Benjamin Netanyahu gave his first press conference since the war this week, and he pretty much said, regime change probably not happening.

Expect just a weakened regime.

An official in the region who spoke on condition of anonymity because they weren't authorized to speak publicly told NPR that Israel is estimating one more week of fighting in Iran.

The official said Israel is working on

preparing the public here to accept the government's new line that this will not be a war leading to Iranian leadership change, but a war that puts Israel in a much better security situation.

And Israel is also relentlessly striking in its other front across the border in Lebanon.

That has led to a devastating humanitarian crisis there.

One in seven are now displaced, and that's according to a leading international refugee organization.

There is a lot of concern about Israel expanding further into Lebanon.

That same official in the region told NPR that Israel is not ruling out an expanded ground operation in southern Lebanon.

You're welcome.

A senior Israeli defense official tells NPR that three more weeks are needed to accomplish its goal of decimating Iran's military forces.

The official spoke on condition of anonymity to disclose sensitive issues.