Vice President Kamala Harris is expected to stick largely to Joe Biden’s foreign policy playbook on key issues such as Ukraine, China, and Iran but could strike a tougher tone with Israel over the war on Gaza if she replaces the president at the top of the Democratic ticket and wins the US November election. As the apparent frontrunner for the nomination after Biden dropped out of the race and endorsed her on Sunday, Harris would bring on-the-job experience, personal ties forged with world leaders, and a sense of global affairs gained during a Senate term and as Biden’s second-in-command. But …