Sir Sadiq Khan called on the UK government to immediately recognise a Palestinian state amid growing warnings of children starving in Gaza.
The London Mayor’s intervention piled pressure on Sir Keir Starmer to take tougher action against Israel as it has severely limited aid into the besieged strip as it pursues its war against terror group Hamas.
Sir Sadiq put on X: “The UK must immediately recognise Palestinian statehood.
“ There can be no two state solution if there is no viable state left to call Palestine.”
In a statement, he added: “The absolutely harrowing scenes of suffering in Gaza are being made worse by the day, with no sign of the crisis abating.
“Starving children searching hopefully for food in the rubble.
“Family members shot dead by Israeli soldiers as they search for aid.
“The international community, including our own government, must do far more to pressure the Israeli government to stop this horrific, senseless killing and let vital life-saving aid in.”
Earlier, the United Nations’ chief warned that a “horror show in Gaza” is unfolding as more than 100 aid agencies told of “mass starvation” in the narrow strip of land besieged by Israel.
UN Secretary-General Antonio Guterres stressed that “starvation is knocking on every door” in Gaza as Israel pursues its war against terror group Hamas.
He spoke out as more than 100 aid agencies, including Save the Children and Médecins Sans Frontières, issued a joint to “sound the alarm” on what they say is “mass starvation” across Gaza.
“Palestinians are trapped in a cycle of hope and heartbreak, waiting for assistance and ceasefires, only to wake up to worsening conditions,” they stressed.
He condemned Hamas, which still holds hostages seized from Israel, but called for more aid to be allowed into Gaza and for the war to end.
The countries condemned what they called the "drip feeding of aid" to Palestinians in Gaza and said it was "horrifying" that more than 800 civilians had been killed while seeking aid.
Mr Lammy previously warned Israel not to cut 400 aid points, and the work of the United Nations and its organisation in Gaza.
Food is being distributed at four aid points run by the Israeli-backed Gaza Humanitarian Foundation.
But hundreds of people are reported to have been shot and killed by Israeli forces in a series of incidents at these aid points as desperate crowds rushed to get food, with an increasing number of children facing starvation.
The UN Security Council urged the 193 United Nations member nations on Tuesday to use all possible means to settle disputes peacefully.
Mr Guterres stressed that is needed now more than ever as he pointed to “the horror show in Gaza” and conflicts in Ukraine, Sudan, Haiti and Myanmar.
He said: “Around the world, we see an utter disregard for - if not outright violations of - international law” as well as the UN Charter.
It is happening at a time of widening geopolitical divides and numerous conflicts, starting with Gaza, where “starvation is knocking on every door” as Israel denies the United Nations the space and safety to deliver aid and save Palestinian lives, he added.
Israel denies deliberately targeting civilians and aid staff as part of its war with Hamas and has sought to blame UN agencies for the failure to deliver food it has allowed in.
Israel stressed on Tuesday that there was the equivalent of 950 trucks of aid already in Gaza waiting for international organisations to hand out.
