Denmark detained a container vessel previously blacklisted by Washington under last year's sweeping Iran sanctions on Thursday, amid suspicions it was operating under a false flag. The Nora was seized after authorities determined it was allegedly sailing under the flag of Comoros without authorization. The ship is now anchored in Danish waters pending further investigation, according to reports. It actually appears to be a box ship transporting containers at the time it was intercepted. It raised the Iranian flag under deeply suspicious circumstances,…