Americans elected Barack Obama their president on his promise to "change" things both at home and abroad. Obama inherited a trashy legacy from George W. Bush: wars in Afghanistan and Iraq, the global financial crisis, a lackluster image of the US and a number of rising powers in the world. And one year on, he seems to be more successful in his diplomacy than in changing things at home.

Obama faces two pressing tasks on the diplomatic front: fortifying America's position and repairing the country's image, and seizing the initiative to transform the international order in order to maintain Washington's hegemony in the long run.

The US president began his reform with ideas, creating the strategic concept of "smart power" and "multi-partner" outlook in the international order, the two halves of his new doctrine. The first means a balanced manipulation of soft and hard powers with comprehensive use of various means to meet challenges flexibly. To this end, his administration proposed that development, defense and diplomacy be regarded as the three pillars of America's foreign strategy. A "multi-partner" outlook means playing down ideological antagonism, that is, the US would be willing to work with other countries, irrespective of their political and social systems, to meet common challenges and build a new international political and economic order. It would, of course, be led by the US but involve the other major powers, too.

Obama's diplomatic and political thrust has been on four fronts. First, he has tried to improve America's image by steering away from unilateralism and militarism of the Bush administration. Among his moves are the decisions to close down the Guantanamo Bay prison, set a timetable for US forces' withdrawal from Iraq, return to climate change talks, implement a "reach-out-hand" diplomacy with countries such as Iran, the Democratic People's Republic of Korea (DPRK), Cuba, Venezuela and Myanmar, and efforts to improve relations with the Islamic world.

America's image has improved to a certain extent in the first year of his rule. A Pew Center poll conducted in 25 countries shows the percentage of people friendly toward the US increased in 24 countries; the only exception was Israel.

Second, Obama has changed America's counter-terrorist strategy dramatically by abandoning Bush's hypothesis. He regards terrorism as one of the many problems the world faces today and has shifted America's frontline against terrorism from Iraq to Afghanistan and Pakistan. Plus, he attaches great importance to all-around cooperation with other major powers in the fields of economics, politics and military relations.

Third, the Obama administration has been making great efforts to maintain its core relationships with global and local powers. It has tried to take Bush's proactive China policy forward by forging a relationship of comprehensive cooperation, establishing the Strategic and Economic Dialogue, and cooperating at G20 summits and climate change talks.

On other fronts, US Secretary of State Hilary Clinton and Russian Foreign Minister Sergei Lavrov are trying to reshape US-Russian relations. The first move to improve bilateral ties, however, came from Obama when he declared that the US would not deploy anti-missile systems in Poland and the Czech Republic. And the way things are going, the US and Russia could sign the Strategic Arms Reduction Treaty.

America's ties with the European Union (EU) got a boost when Vice-President Joe Biden told the Munich Peace Conference that the US respects its EU allies. In return, other NATO members have agreed to provide more help to the US in its war against the Taliban in Afghanistan. Obama, too, has helped US-EU ties by coordinating with European leaders on climate change issues.

Fourth, the US administration has been trying to take the lead in meeting global challenges, though its ability to set international agenda is being tested extensively in the process. The US has played a vital role to help reform the world financial and economic order. But despite some developing countries getting a greater say in structural reform of the IMF and other international agencies, the US still dominates them.