Cold April, May, messed with old US economic approach (6,9)

I believe the answer is:

dollar diplomacy

'us economic approach' is the definition.
(American foreign policy)

'cold april may messed with old' is the wordplay.
'messed with' is an anagram indicator (letters get messed up).
'cold'+'april'+'may'='coldaprilmay'
'coldaprilmay' with its letters mixed up with 'old' makes 'DOLLAR DIPLOMACY'.

(Another definition for dollar diplomacy that I've seen is " Economic factors deployed as "soft power"".)

I've seen this clue in The Times.

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