Spanish edict sister spies me breaking soon (14)

I believe the answer is:

pronunciamento

'spanish edict' is the definition.
(political proclamation in Spanish-speaking nations)

'sister spies me breaking soon' is the wordplay.
'sister' becomes 'nun' (sister is a term of address for a nun).
'spies' becomes 'cia' (Central Intelligence Agency).
'breaking' indicates putting letters inside.
'soon' becomes 'pronto' ('quickly' in Spanish).
'nun'+'cia'+'me'='nunciame'
'nunciame' inserted inside 'pronto' is 'PRONUNCIAMENTO'.

I've seen this clue in The Times.

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