Norway is introducing temporary border checks on its frontiers with other Western European nations after the domestic security agency raised the terror threat level. The checks will apply until 22 October according to a police statement, which cited “a challenging threat picture”. The move follows the 8 October announcement by the security agency, PST, that it was increasing Norway’s threat level from “moderate” to “high,” the second-highest level on a five-tier scale. PST pointed to an increased threat to Jewish and Israeli targets in particular. Norway isn’t a member of the European Union, b…