The leaders of three main political parties in Britain began the second TV debate on Thursday evening in Bristol.

Britain's Prime Minister Gordon Brown (R), opposition Conservative Party leader David Cameron and Liberal Democrat leader Nick Clegg (L) take part in the second of Britain's leadership election debates, in Bristol, southwest England April 22, 2010. [Xinhua]

Prime Minister Gordon Brown, also the Labor party leader, opposition Conservative party leader David Cameron, and Liberal Democrat leader Nick Clegg focused on the international affairs during the 90-minute debate hosted by Sky News.

During the opening statement, Brown outlined his vision for a better Britain while Cameron stressed he called for real change that comes not just from politicians but from society as a whole.

Clegg, who won great support after the first debate, said he wanted Britain to lead in Europe and the world.

Anti-war protesters gathered at the venue and six people were arrested for public order offenses.

On Europe, Cameron said he wanted Britain to be in Europe but not run by Europe while Brown and Clegg said Britain needs to work together with Europe on issues like anti-terrorism and climate change.