Emigres drop Asia in disarray (8)
I believe the answer is:
diaspora
'emigres drop asia in disarray' is the definition.
I can't judge whether this definition defines the answer.
'drop asia in disarray' is the wordplay.
'in disarray' indicates an anagram.
'drop'+'asia'='dropasia'
'dropasia' with letters rearranged gives 'DIASPORA'.
Can you help me to learn more?
(Other definitions for diaspora that I've seen before include "people dispersing" , "Jews outside Israel" , "The dispersion of Jews throughout the world" , "people's movement" , "Scattering in exile" .)