Donald J. Trump has said he will transform America's relationship with allies and adversaries. He pledged to end the war in Ukraine in 24 hours, raise tariffs and deport millions of people.
The prime minister replaced an experienced former general with Katz, who had been foreign minister and who staunchly supported Israel's right-wing government.
Badenoch's rise is partly the result of a deliberate diversification of the party under David Cameron in the 2000s. In her politics, she exemplifies the more recent turn to the right.