Give me an example of any accidents, incidents or of a near miss where a local language was directly responsible for such an event
IIRC SAS at Milan Linate. I was flying there not long afterward, and the weather was ratsh*t. We were following a local, and on short final I was trying to get confirmation that he had vacated the runway, since all comms between him and the tower were in Italian. All set for a go-around when it was confirmed, in English, that he had done so.