Possible Clues:

• Bar this tongue in the CIA back there
• CIA bar on this Middle East language
• Correspond; last word of Othello
• 8-Down's tongue
• Language widespread in Middle East and N Africa
• Like the word 16-Across
• Language whose alphabet starts alif, ba, ta, tha ...
• With the help of a crib, a different language may be made
• Language of the Middle East
• Source of the word ''algebra''