Prime Minister Keir Starmer said he was appalled by the attack and additional police officers would be deployed at synagogues across the U.K. (Scripps News)On Yom Kippur, the holiest day in the Jewish calendar, a Manchester synagogue was attacked, prompting heightened security across the UK. An assailant drove a car into people outside a synagogue Thursday in northern England and then began stabbing them, killing two and seriously wounding four in a terrorist attack on the holiest day of the Jewish year, police said. Officers shot and killed the suspect, Greater Manchester Police said, though it took authorities some time...