These organisations are YEARS behind the times, there is nothing new about jamming aircraft GPS reception. My first encounter was in the mid 90s over Bosnia where the early stand-alone GPS receiver would regularly go to the Azores when passing over Pula. Later around 2014 I regularly overflew some military field close to CAI during an RNAV approach only to find the Airbus 'Pipping' with NAV ACCURACY DOWNGRADE on final approach. The B744 would regularly lose one or both GPS flying over Kurdistan on the way to the Gulf, often not recoverable until after landing. Lucky there was no oceanic transit to follow otherwise reverting to old-school procedures is a serious PITA.