LONDON — Prime Minister Keir Starmer announced Tuesday that Britain will formally recognize the state of Palestine in September — unless Israel agrees to a ceasefire in Gaza and commits itself to a two-state solution before then.

The U.K. will recognize a Palestinian state in September unless Israel agrees to a ceasefire in Gaza, allows the U.N. to bring in aid and takes other steps toward long-term peace, Prime Minister Keir Starmer said Tuesday.