The British government Thursday called antisemitism in the U.K. an “emergency,” and said it would spend millions increasing security around Jewish sites after a string of arson attacks and a double stabbing. The government announced 25 million pounds ($34 million) for more police patrols and protection around synagogues, schools and community centers after two Jewish men were stabbed and seriously injured in London’s Golders Green neighborhood on Wednesday. The victims, aged 34 and 76, are in stable condition. Police arrested a 45-year-old man on suspicion of attempted murder and labeled the attack an act of terrorism. Detectives are working to determine a motive, and whether there could be a link to Iranian proxies. Counterterrorism police are investigating whether the stabbings are linked to recent arson attacks on synagogues and other Jewish sites in the British capital.…