Katz did not specify whether this meant Israel and US were expecting their military campaign to soon come to an end but only said the next phase would last as long as necessary, according to the remarks released by his office.
The Israeli Air Force continues to carry out an intensive wave of attacks on Tehran and across Iran as a whole, Katz said, while calling on Iranians to oppose their leadership.
"Only the Iranian people can put an end to this - through a determined struggle until the terrorist regime is overthrown," the minister said.
Earlier on Saturday, the Israeli military said it had detected a new wave of missile launched toward the country from Iran.
Air defence systems were working to intercept the projectiles, it said on Telegram.
The Israeli army said it had carried out about 400 waves of air strikes in the first two weeks of the war, each involving numerous fighter jets.
The main targets were in central and western Iran and focused on missile launch facilities and defence installations, the Israel Defence Forces (IDF) posted online.
In the past 24 hours alone, more than 200 targets were bombed.
Dozens of ballistic missile launch pads were struck, some of which were reportedly being prepared for attacks on Israel.
Air defence systems and weapons depots were also targeted, the IDF said.
In a strike in Tehran on Friday, two senior intelligence officers from Khatam al-Anbiya Central Headquarters were killed, the IDF said.
The headquarters assumes command of Iran's general staff in wartime.
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