US Democratic Convention

The US Democratic convention in Denver, Colorado, is to turn its focus on foreign policy and security with speeches by Joe Biden Bill Clinton.



Senator Biden, Barack Obama\'s chosen running-mate for the presidential race, is to deliver the keynote speech.



Former President Clinton will take the stage a day after his wife Hillary, who was defeated by Obama in the race to the White House.



Last night, Mrs. Clinton called for Democrats to unite behind Obama, saying she was his proud supporter.



Mr. Clinton is expected to launch attacks on Obama\'s Republican rival for the presidency, John McCain, and on the Bush administration, particularly on the state of the US economy.



US media reports indicate that his speech will be closely scrutinised for signs of lingering resentment over the bruising primary Democratic campaign, which ended in defeat for his wife.