Israel's Prime Minister Benjamin Netanyahu has fired Defence Minister Yoav Gallant, saying there is a "crisis of trust" between them.

Netanyahu said in a statement his trust in Gallant had "eroded" in recent months and that Foreign Minister Israel Katz would replace Gallant.

Gallant posted on social media that the "security of the state of Israel was and will always remain the mission of my life".

The sacking has already prompted protests on the streets of Tel Aviv and political opposition leaders have called for wider public demonstrations.

Netanyahu and Gallant have long had a divisive working relationship, and over the past year, there have been reports of shouting matches between the two men over Israel’s war strategy.

Gallant has said a hostage release deal with Hamas should be prioritised ahead of continuing the war in Gaza, a position rejected by the PM.

The former defence minister has also been unhappy with plans to continue to allow Israel’s Ultra-Orthodox citizens to be exempt from serving in the military.

Months before the start of the war in Gaza in October 2023, Netanyahu had fired Gallant over political differences, before reinstating him following major public outcry.

But on Tuesday Netanyahu said: "In the midst of a war, more than ever, full trust is required between the prime minister and the minister of defence.

He said although there had been trust and "fruitful work" in the first months of the war, "during the last months this trust cracked".

Netanyahu added that "significant gaps were discovered between me and Gallant in the management of the campaign".

These were "accompanied by statements and actions that contradict the decisions of the government," he added.

Following his firing, Gallant posted only a short message on X, stating that the security of Israel "was and will always remain the mission of my life".

His replacement Katz is seen as even more hawkish in terms of military strategy.

Another Netanyahu ally, Gideon Sa'ar - who previously held no cabinet portfolio- will become the new foreign minister.

Gallant's removal will come into effect in 48 hours. The appointment of the new ministers requires the approval of the government and then the Knesset.

Netanyahu first fired Gallant in March 2023 following their disagreement over controversial plans to overhaul the justice system.

But he was forced to retract the sacking following massive public protests in several cities in Israel - an event that became known as "Gallant Night."

In May this year, Gallant voiced open frustration at the government’s failure to address the question of a post-war plan for Gaza. Gallant wanted Netanyahu to declare publicly that Israel has no plans to take over civilian and military rule in Gaza.

It was a rare public sign of divisions within Israel's war cabinet over the direction of the military campaign.

“Since October, I have been raising this issue consistently in the cabinet,” Gallant said, “and have received no response".

Netanyahu responded by saying that he was "not ready to exchange Hamastan for Fatahstan," about rival Palestinian groups Hamas and Fatah.

Responding to Gallant's removal on Tuesday night, members of Israel's political opposition parties called for protests from the public.

A group representing the families of people taken hostage by Hamas in its 7 October attack also condemned Netanyhu's dismissal of Gallant, calling it a continuation of efforts to "torpedo" a release deal.

Over 100 hostages out of 251 taken by Hamas on 7 October 2023 remain unaccounted for more than a year into the war.

The Hostages and Missing Families Forum called on the incoming minister Katz to “express an explicit commitment to the end of the war and to carry out a comprehensive deal for the immediate return of all the abductees”.

Gallant’s dismissal also takes place on the day of the presidential election in the US- Israel’s key backer in its war in Gaza - a timing noted by several Israeli media outlets.

Gallant was viewed as having a much better relationship with the White House than Netanyahu.

A representative for the White House's National Security Council said on Tuesday: "Minister Gallant has been an important partner on all matters related to the defence of Israel. As close partners, we will continue to work collaboratively with Israel’s next minister of defence."

Observers note that Gallant's removal also comes at a time when Netanyahu is under pressure from far-right politicians to pass a bill which would have continued to allow Israel's Ultra-Orthodox citizens to be exempt from serving in the military. Gallant had been a high-profile opponent of the bill.