Former President is idiot donning new gear regularly (6)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

ASS (idiot), contained in (donning = putting on) N (abbreviation for new) + alternate letters (regularly) of [n] E [a] R . Short name for Gamal Abdel Nasser Hussein, President of Egypt in the mid 20th century.