MUNICH (Agencies) - US Vice-President Joe Biden promised on Saturday a 'new tone' in foreign policy under Barack Obama but warned other nations that improved relations were a two-way street. "I come to Europe on behalf of a new administration determined to set a new tone not only in Washington, but in America's relations around the world," he said in a major foreign policy address at the Munich Security Conference. He said that it was time to 'reset the button' on Washington's frosty ties with Moscow, and that the US was willing to talk with the 'great people' of Iran after three decades of frozen relations. But speaking on his first trip abroad since taking office along with President Obama on January 20, he said that US allies must also lift their game. "America will do more, but America will ask for more from our partners." "As we seek a lasting framework for our common struggle against extremism, we will have to work cooperatively with nations around the world - and we will need your help," Biden said. As an example, Biden said the United States would ask other countries to take in inmates from Guantanamo, predecessor George W Bush's 'war on terror' prison which appalled many allies and which Obama has said he will close. Biden's comments were made at a conference with top power brokers from around the world, including from Russia and Iran, focusing on a range of hot-button security issues for the 21st century. These include Iran's disputed nuclear programme, US plans for elements of a missile defence shield on Russia's doorstep in eastern and central Europe, and the raging Taliban insurgency in Afghanistan. Other talking points included nuclear disarmament, the Middle East, the future of the NATO military alliance 20 years after the end of the Cold War, energy security and Iraq. Obama sent other big guns to Munich too: national security advisor General James Jones, special envoy to Afghanistan and Pakistan Richard Holbrooke and General David Petraeus, US commander in Afghanistan and Iraq. "We will be willing to talk to Iran, and to offer a very clear choice: continue down the current course and there will be continued pressure and isolation; abandon the illicit nuclear programme and your support for terrorism and there will be meaningful incentives," Biden said. "The United States will continue to work for a stable Afghanistan, that's not a haven for terrorists. We look forward to sharing that commitment with the government and the people of Afghanistan and Pakistan and with all of our allies and partners. "President Obama has ordered a strategic review of our policy in Afghanistan and Pakistan to make sure that our goals are clear and that they are achievable. As we undertake that review we seek ideas and input from you and all of our partners and we genuinely seek those ideas...... But no strategy for Afghanistan in my humble opinion can succeed without Pakistan," Biden said and added, "We must all strengthen our cooperation with the people and government of Pakistan, help them stabilise their tribal areas, promote economic development and opportunity throughout their country." Britain's Foreign Secretary David Miliband, inspired like many here by the optimism in Biden's speech said: "It is not going to get any better than this. It's not going to get better than an American administration saying we want normal relations with Iran." Another key issue was the West's relations with Moscow, which hit lows not seen since the Cold War under Bush and Vladimir Putin, Russia's former president turned prime minister. Biden announced on Saturday that the United States - reeling from its worst recession in decades - would press ahead with the shield only if it can be proved that the technology works and is cost effective. "We will do so in consultation with you, our NATO allies, and with Russia," Biden said. "It is time to press the reset button and to revisit the many areas where we can and should work together." Also attending the conference was Ali Larijani, Iran's parliamentary speaker and former chief nuclear negotiator, but before coming to Munich Larijani said there would be no face-to-face meeting with the US number two.