The UK prime minister presented a European-led peace plan for Gaza to Trump during a meeting in Scotland on Monday.
Downing Street has not given details of the plan, but has said the "next steps" will be set out after the cabinet meeting, which is being held at 14:00 BST today.
A spokesman for Starmer said the proposals would also be presented to allies, including Arab states, over the coming days, according to the BBC.
In an article over the weekend, the prime minister likened the plans to the proposed "coalition of the willing" to support any potential deal to end the war in Ukraine.
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