Hundreds of schools across Europe were evacuated on Wednesday after receiving bomb threats, police forces say, in the latest wave of efforts to intimidate populations. More than 300 schools in Italy were evacuated after bomb warnings were received, prompting security checks and precautionary measures. Delhi Police say most unsolved hoax bomb threat emails were routed through VPNs and overseas servers, masking the senders’ identities. Investigators say requests for information often run.