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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Kieran Trippier has received his first call-up to the England squad after impressive form for Spurs.
The prime minister said the public should remain vigilant following a meeting of the Government's emergency committee Cobra.
The Queen has arrived at Royal Manchester Children's Hospital to meet victims of the suicide bombing at the city's arena.