Britain raised its national terrorism ​threat level to "severe" from "substantial" on Thursday, a day after an antisemitic attack in London was declared a terrorist incident by police. The attack that unfolded in Golders Green, a predominantly Jewish area in the capital, saw two Jewish men taken to hospital with stab wounds. A 45-year-old man has been charged with attempted murder. “Britain’s Jewish community suffered yet another vile terrorist attack,” U.K. Prime Minister Keir Starmer said, noting that this is just the latest instance of antisemitism to unfold in recent months. “People are scared, scared to show who they are in their community, scared to go to synagogue and practice their religion, scared to go to university as a Jew, to send their children to school as a Jew, to tell their colleagues that they are Jewish, even to use our NHS,” Starmer said in a televised address to the nation. “Nobody should live like that in Britain, but Jews do,” he continued. “Antisemitism is an old, old hatred.…