Straggling agent hiding international article in Berlin (7)
I believe the answer is:
spidery
'straggling agent hiding international article in berlin' is the definition.
I can't tell whether this defines the answer.
'agent hiding international article in berlin' is the wordplay.
'agent' becomes 'spy' (spy is a kind of agent).
'hiding' indicates putting letters inside.
'international' becomes 'i' (abbreviation eg in IMF).
'article in berlin' becomes 'der' (I can't justify this - if you can you should give a lot more credence to this answer).
'i'+'der'='ider'
'spy' going around 'ider' is 'SPIDERY'.
Can you help me to learn more?
(Other definitions for spidery that I've seen before include "thin, angular style" , "Gangly" , "Like a hand" , "recalling web designers?" , "Wispy" .)