UK police said on Sunday they are investigating whether a string of arson attacks on Jewish sites in London are the work of Iranian proxies, as the country’s chief rabbi said British Jews are facing a campaign of violence and intimidation. The Metropolitan Police force says counterterror officers are investigating fires at synagogues and other sites linked to the Jewish community, as well as an attack on a Persian-language media company. No one has been injured in the blazes, the latest of which...