Sixty years on from the Korean War, President Obama has paid tribute to US troops who were sent to the aid of South Korea.
During his speech, he quoted a marine who he said spoke for millions when he said: "Thank God it is over".
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The major party leaders' campaigns for the General Election will remain suspended on Wednesday following the Manchester terror attack.
Thousands of people have donated to help the families of the victims - as well as a homeless man who came to their aid.
Some children, particularly those who have been more directly affected, may show symptoms of stress and trauma.