US Vice-president Joe Biden has said America is determined to establish a new tone in its relations with the rest of the world.Delivering the Obama administration’s first major foreign policy speech in Munich, Biden spoke about Washington’s relations with Europe, Russia and Iran as well as touching on subjects such as Climate change. “I come to Europe on behalf of a new administration, an administration that’s determined to set a new tone, not only in Washington, but in America’s relations around the world. That new tone is rooted in strong bipartisanship to meet these common challenges. And we recognise that these challenges, to need to meet them is not an opportunity, not a luxury, but it’s is an absolute necessity,’‘ the US Vice-president said. Biden also said the US remained committed to missile defence, but claimed it was time to press the reset button in US Russian relations, which he admitted had deteriorated in recent years. In addition, he claimed the US would do more to build world security, adding it would expect more from its partners too. A hint perhaps, the US will ask Germany for bigger troop commitments in Afghanistan. In the centre of Munich, around 2000 anti-war demonstrators gathered calling for world leaders to do more to prevent armed conflicts.