Ed Miliband is hoping his "brush-by" visit with Barack Obama will show he is ready to lead Britain on the global stage.
Ahead of his visit to the White House, the Labour leader says he is determined to create a "post-Iraq" relationship with the United States.
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The launch was made in defiance of United Nations sanctions barring North Korea from using ballistic missile technology.
David Cameron has raised concerns after figures showed 100 babies spent time living behind bars last year.
About 124,000 patients had to wait for at least 12 hours in accident and emergency departments last year, according to an investigation.