But this wasn’t a special press conference to announce something. He was simply asked a question based on the fact that he's due to meet the Argentinian President, who has recently been stirring things up again. Cameron seems to have been in the news a lot recently regarding Trump/NATO, and...
You’re reading far too much into it. Cameron was presumably answering a question on this because he’ll be meeting the Argentinian President at the G20 in Brazil, who recently called for the Falklands to be handed over to Argentina. TBH I think there is no groundswell of general election emotion...