British Prime Minister David Cameron is launching his campaign for European Union reform at a leaders' summit in Latvia.
The meeting is actually intended to focus on EU relations with former Soviet states, but Mr Cameron is using it to begin reform discussions.
He's promised a referendum on Britain's EU membership by 2017 and wants to secure changes in London's relationship with Brussels before then.
It's the first EU leaders' summit since David Cameron's Conservative Party won a parliamentary majority in Britain's general election.
Political reporter Theo Usherwood says the Prime Minister has several key aims.
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