ISTANBUL (Reuters) - Turkey's foreign ministry said on Thursday the leaking of a recording purportedly of top officials discussing possible military operations in Syria was a "wretched attack" on national security and those behind it would receive the heaviest punishment. In a written statement the ministry said some sections of the recording - presented on an a**nymous YouTube account as Turkey's intelligence chief discussing Syria with the foreign minister and deputy head of the armed forces - had been manipulated. (Writing by Daren Butler; Editing by Nick Tattersall)