Here is how world leaders reacted to US President Joe Biden's inauguration on Wednesday.
South Korean president Moon Jae-in tweets
"@JoeBiden, congratulations on your inauguration. America is back. America's new beginning will make democracy even greater. Together with the Korean people, I stand by your journey toward 'America United'."
Taiwan president Tsai Ing-Wen in a statement from her office:
"President Tsai wishes the new Biden administration smooth policy implementation, and looks forward to building on the strong foundation of the Taiwan-US partnership to further our bilateral collaboration, as well as the prosperity of, and friendship between, the people of both countries."
Singapore Prime Minister Lee Hsien Loong in a letter to Biden:
"Strong American leadership will make a decisive difference to our collective recovery and the shape of the post-COVID-19 world." "There is a deep reservoir of goodwill for the US in our region, because of the vital role the United States has played anchoring regional stability and economic prosperity for over half a century."
Japanese Prime Minister Yoshihide Suga tweets:
"Congratulations to President @JoeBiden and Vice President @KamalaHarris on your inauguration. Japan and the United States are allies tied firmly by bonds and shared universal values. "I look forward to working with you and your team to reinforce our alliance and to realize a Free and Open Indo-Pacific."
European Commission President Ursula Von Der Leyen tweets:
"The United States is back. And Europe stands ready. To reconnect with an old and trusted partner, to breathe new life into our cherished alliance. I look forward to working together with @JoeBiden."
British Prime Minister Boris Johnson, speaking in parliament:
"I look forward to working with him (Biden), and with his new administration, strengthening the partnership between our countries and working on our shared priorities: from tackling climate change, building back better from the pandemic and strengthening our transatlantic security."
German president Frank-Walter Steinmeier, in a video statement:
"Today is a good day for democracy. In the United States of America, it has faced tremendous challenges - and endured. Despite the attempts to tear at America's institutional fabric, election workers and governors, the judiciary and Congress, have proven strong. I am greatly relieved that, today, Joe Biden is being sworn in as president and will be moving into the White House. I know many people in Germany share this feeling."
Pope Francis, in a message to Biden:
"Under your leadership, may the American people continue to draw strength from the lofty political, ethical and religious values that have inspired the nation since its founding."
"I likewise ask God, the source of all wisdom and truth, to guide your efforts to foster understanding, reconciliation and peace within the United States and among the nations of the world in order to advance the universal common good."
Irish Prime Minister Micheal Martin, in a statement:
"As he takes the oath-of-office, I know that President Biden will feel the weight of history - the presence of his Irish ancestors who left Mayo and Louth in famine times in search of life and hope." "I hope he will also be conscious of the great pride we in Ireland take in his immense achievement. He is one of us, part of our global family."
Spanish Prime Minister Pedro Sanchez, speaking at a public event:
"The (election) victory of Biden represents the victory of democracy over the ultra-right and its three methods, the massive deception, the national division and the abuse, even violent, of democratic institutions... Five years ago, we thought Trump was a bad joke, but five years later we realized he jeopardized nothing less than the world's most powerful democracy."
Italian Prime Minister Giuseppe Conte, speaking in parliament on tuesday:
"We are looking forward to the Biden presidency, with which we will start working immediately in view of our presidency of the G20. We have a strong common agenda, ranging from the effective multilateralism that we both want to see, to climate change, green and digital transition and social inclusion."
French President Emmanuel Macron tweets:
"Best wishes on this most significant day for the American people! We are together. We will be stronger to face the challenges of our time. Stronger to build our future. Stronger to protect our planet. Welcome back to the Paris Agreement!"