Crossword Genius

Janus, an organised city in a USA territory (3,4)

Ross

I believe the answer is:

san juan

I'm a little stuck... Click here to teach me more about this clue!

'city in a usa territory' is the definition.
'San Juan' can be an answer for 'territory' (San Juan is an example). I am unsure of the 'city in a usa' bit.

'janus an organised' is the wordplay.
'organised' is an anagram indicator.
'janus'+'an'='janusan'
'janusan' with letters rearranged gives 'SAN JUAN'.

Can you help me to learn more?

(Other definitions for san juan that I've seen before include "Hispanic capital" , "Capital of Puerto Rico" .)

I've seen this clue in the Sydney Morning Herald.
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