By Steve Holland and Alexandra Alper WASHINGTON (Reuters) – US President Joe Biden on Thursday promised a new era after the scattered foreign policy of his predecessor Donald Trump, declaring that “America is back” in the world stage in his first diplomatic speech as president. . In his speech, Biden pointed to aggressive approaches toward China and Russia, urged Myanmar’s military leaders to stop their coup, and declared an end to US support for a Saudi-led military campaign in Yemen. “The American leadership must confront this new moment of advancing authoritarianism, including China’s growing ambitions to rival the United States and Russia’s determination to damage and disrupt our democracy. We must face the new moment … accelerating challenges. global pandemic climate crisis to nuclear proliferation, “said Biden. Trump enraged European and Asian leaders with tariffs, fracturing global alliances and threats to withdraw US troops. It did little to counter a wave of authoritarianism in some countries. After a Trump-inspired mob attacked the United States Capitol on January 6, protesting Biden’s election victory, both foreign allies and rivals expressed doubts about the health of American democracy. Biden’s speech on Thursday was a forceful attempt to overcome those doubts and convince Americans of the value of a strong international focus. “Investing in our diplomacy is not something we do just because it is the right thing to do for the world,” he said. “We do it to live in peace, security and prosperity. We do it because it is in our own interest.” Biden’s choice of the State Department as the site for his first major diplomatic speech was an important symbol of the value he places on career diplomats, whom Trump viewed largely as opponents. “America’s alliances are our greatest asset. And leading with diplomacy means standing shoulder to shoulder with our allies and key partners once again,” Biden said. Biden in his early days has attempted to repair what he has called the damage to America’s position around the world by rolling back Trump’s policies. He is working to reactivate the Iran agreement and renew the United States’ membership in the Paris agreement and the World Health Organization. He challenged Russian President Vladimir Putin. “I made it clear to President Putin, in a very different way than my predecessor, that the days of the United States turning to aggressive actions by Russia, interfering with our elections, cyberattacks, poisoning its citizens, are over.” he said. Trump had initially sought a warm relationship with Chinese President Xi Jinping, but differences over trade, Hong Kong and what the US military calls Beijing’s destabilizing and aggressive behavior in the South China Sea led to a rift. China, which is expanding its military and working to increase its influence around the world, is perhaps Biden’s biggest international challenge as he begins his presidency. He called Beijing “our most serious competitor.” “We will confront China’s economic abuses, counter its aggressive and coercive action to repel China’s attack on human rights, intellectual property, and global governance. But we are ready to work with Beijing when it is in the interest of the United States to do so.” added. he said. Not all America’s allies can be happy with the sharp turn in U.S. foreign policy, including Poland, where Trump once pledged to deploy U.S. troops, or a number of nations that have criticized Washington’s tough intervention in last. “We are a country that does great things. American diplomacy makes it possible and our administration is ready to take over and lead once again,” Biden said.