'America is back, Diplomacy is back', says Biden as he trumpeted to stop U.S. support for Yemen war

Biden is also working to revitalise the Iran deal, and had renewed US membership in the Paris accord. The US administration is also trying to settle its relations with World Health Organisation.

Mr Biden said he intended to “send a clear message to the world: America is back. We’re going to rebuild our alliances and We’re going to re-engage the world.”

Mr President is seen delivering on a campaign promise, days after his government announced a review of major U.S. arms sales to Riyadh that were approved by the Trump administration.

In ending American support for offensive Saudi operations in Yemen’s civil war, he said had “created a humanitarian and strategic catastrophe.”

Further, he said that he would work to revitalise dormant peace talks and announced the appointment of a special envoy for Yemen.

While challenging Russian President Vladimir Putin, Biden said, "I made it clear to President Putin, in a manner very different from my predecessor, that the days of the United States rolling over in the face of Russia's aggressive actions, interfering with our elections, cyber attacks, poisoning its citizens, are over,".

"American leadership must meet this new moment of advancing authoritarianism, including the growing ambitions of China to rival the United States and the determination of Russia to damage and disrupt our democracy. We must meet the new moment...accelerating global challenges from the pandemic to the climate crisis to nuclear proliferation," he added.

China, which is escalating its military and working to grow its authority around the world, is possibly Biden's biggest international challenge as he begins his presidency. He called China "our most serious competitor."

"We'll confront China's economic abuses, counter its aggressive, coercive action to push back on China's attack on human rights, intellectual property and global governance. But we're ready to work with Beijing when it's in America's interest to do so," he thought.