Inspect unit struggling with crises (10)
I believe the answer is:
scrutinise
'inspect' is the definition.
(I know that inspect can be written as scrutinise)
'unit struggling with crises' is the wordplay.
'struggling with' indicates anagramming the letters (the letters struggle or wriggle into a new form).
'unit' anagrammed with 'crises' gives 'SCRUTINISE'.
(Other definitions for scrutinise that I've seen before include "Examine closely - runs cities (anag)" , "Carefully examine" .)