Possible Clues:

• Numeral type
• Mideastern language
• 'Tongue for a bar back there, I see (6)'
• Flipping bar in first class has cocaine? That sounds like something you'd hear from Jordan!
• There's a CIA bar on this language, oddly
• Language spoken by CIA outside boozer when travelling north
• Like 1-Across
• Language barrier in American intelligence, being backward
• One of the six official languages of the United Nations
• It's heard in Palestine