The Prime Minister has tweeted a photo of himself meeting troops in Afghanistan.
David Cameron said: "It's been a privilege talking to the men and women serving Britain in Helmand on Armed Forces Day."
More top news
Helicopters are searching for survivors who may be marooned after a weekend of heavy rain.
Thousands of people attended a protest on Copacabana Beach to demand presidential elections as pressure mounts on Brazil's leader to resign.
Brexit on Theresa May's terms could see the UK lose access to a database of information on terrorists and criminals, the Lib Dems have said.