Country starts to import an old Indonesian port (9)

'old indonesian port' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'country starts to import an' is the wordplay.
I cannot really understand how this works, but
'country' could be 'holland' (Holland is an example) and 'holland' is found within the answer.
'an' could be 'i' (Roman numeral for one) and 'i' is present in the answer.
A single letter 'a' remains which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?