LONDON — The turmoil of the Israel-Hamas war is causing reverberations far beyond the Middle East, as close United States allies grapple with the limits of free speech while political and public tensions rise. On Monday, British Prime Minister Rishi Sunak fired the interior minister, Suella Braverman, days after she accused police of being too lenient with pro-Palestinian demonstrators whom she labeled "hate marchers" supporting terrorism. Braverman’s departure led to a government reshuffle that saw the unexpected return of former Prime Minister David Cameron as foreign secretary. Cameron will now be responsible for leading Britain's response to the war, which...