Talks over sanctions having broken down (13)

I believe the answer is:

conversations

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

'talks' is the definition.
The answer and definition can be both related to communication as well as being plural nouns.
Maybe they are linked in a way I don't understand?

'over sanctions having broken down' is the wordplay.
'over sanctions' anagrams to 'CONVERSATIONS'.
But, I'm not clear how the anagram is indicated.

Can you help me to learn more?

I've seen this clue in The Irish Independent.

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