David Cameron said Argentinian President Cristina Kirchner should respect the outcome of the referendum on the Falkland Islands set to be held later this year.
The Prime Minister said if Falkland Islanders wanted to remain part of Britain, they would have his "100 per cent backing".
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Showers continue across some southern and western areas tonight.
Two people are being treated in hospital after an "explosion" in a flat in West Dunbartonshire.
Tom Billings, 22, went missing in Canada in December 2013 during an eight-week trip of North America.