A1809/26 NOTAMR A1102/26 Q)OIIX/QAFXX/E//000/999/ A)OIIX B)2608090555 C)2609051000EST E)AIRSPACE SAFETY AND SECURITY WARNING ISSUED BY IRAN CAA: HAZARDOUS SITUATION OVER HIGH SEAS WITHIN FOLLOWING  COORDINATES (IN SEQUENCE):  1) 254600N 0570800E  2) 254300N 0565000E  3) 251200N 0571100E  4) 244000N 0574800E  5) 242200N 0584800E  6) 235900N 0592100E  7) 224400N 0605400E  8) 204300N 0612300E  9) 203000N 0641200E  10) 224400N 0645500E  11) 232600N 0654000E  12) 244200N 0612100E  13) 244800N 0612500E  14) 250800N 0592600E  15) 250700N 0585800E  16) 252900N 0573000E  THEN CLOSING TO THE POINT OF ORIGIN FROM MSL TO FL100. DUE TO INCREASED MILITANT AND NAVAL ACTIVITIES, ELECTRONIC WARFARE  AND AIR DEFENSE READINESS, ELEVATED RISKS EXIST:  - MISIDENTIFICATION OF CIVIL AIRCRAFT  - SUDDEN AIRSPACE RESTRICTIONS OR REROUTING  - GNSS/GPS INTERFERENCE AND COM DISRUPTION  - INCREASED MILITARY INTERCEPTIONS  - SHORT NOTICE AIR ROUTE CLOSURES.  ALL IRANIAN AIR OPERATOR HAVE TO EXERCISE EXTREME CAUTION.   PERFORM ENHANCED RISK ASSESSMENTS PRIOR TO EACH FLIGHT.   MONITOR NOTAMS, ATC, AND SECURITY ADVISORIES CONTINUOUSLY.  HAVE CONTINGENCY PLANS FOR REROUTING, DIVERSION, COMM FAILURE AND  UNEXPECTED RESTRICTIONS.  COMPLY IMMEDIATELY WITH MILITARY/CIVIL ATC INSTRUCTIONS.  CONSIDER ALTERNATIVE ROUTING.