UAE leaders congratulated Joe Biden after he was confirmed as the 46th president of the United States.
Mr Biden and Kamala Harris were officially sworn in as president and vice president during a landmark inauguration in Washington on Wednesday.
The veteran Democrat swept to power after a bitterly fought – and subsequently contested – election battle with predecessor Donald Trump.
The ceremony came only two weeks after a violent insurrection at the US Capitol by pro-Trump rioters.
At least 25,000 National Guard members were on duty amid heightened fears of armed protests.
President Sheikh Khalifa sent a message of support to his American counterpart.
In his cable, Sheikh Khalifa wished Mr Biden success and expressed hope that the two countries would deepen their decades-long ties under his administration, working side by side on key issues such as global health, climate change and tackling violent extremism.
Sheikh Khalifa reflected on the close bonds already built up between Mr Biden and the Emirates during his years of service in the US Senate and his eight years as vice president under the leadership of Barack Obama.
Crown Prince of Abu Dhabi and Deputy Supreme Commander of the UAE Armed Forces Sheikh Mohamed bin Zayed receives Joe Biden, then vice president, at Emirates Palace in Abu Dhabi, UAE, March 7, 2016. File photo / Razan Al Zayani for The Crown Prince Court
The message was echoed by Sheikh Mohammed bin Rashid, Vice President and Ruler of Dubai, and Sheikh Mohamed bin Zayed, Crown Prince of Abu Dhabi and Deputy Supreme Commander of the Armed Forces, who called for the nations to work closely in the future.
Sheikh Mohamed welcomed the opportunity to work with the new president to tackle global issues and solidify peace efforts in the region.
He wished the new Biden-Harris administration well in a message on Twitter on Thursday.
In his inauguration speech, President Biden said his election was a victory for democracy.
"This is America's day. This is democracy's day. A day of history and hope, of renewal and resolve," he said.
"Today we celebrate the triumph not of a candidate but of a cause, a cause of democracy. The people – the will of the people – has been heard, and the will of the people has been heeded.
"We've learnt, again, that democracy is precious. Democracy is fragile. And, at this hour my friends, democracy has prevailed."
President Joe Biden's inauguration in pictures US President Joe Biden speaks during the 59th Presidential inauguration in Washington. Reuters
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President Joe Biden and first lady Jill Biden wave as they arrive at the North Portico of the White House. AP Photo
President Joe Biden and his wife Jill embrace as they arrive to the White House. Reuters
President Joe Biden and first lady Jill Biden walk up the stairs as they arrive at the North Portico of the White House. AP Photo
President Joe Biden, First Lady Jill Biden and family, walk in front of the White House. AP Photo
President Joe Biden and Vice President Kamala Harris participate in a wreath laying ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery. AP Photo
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US President Joe Biden, first lady Jill Biden, Vice President Kamala Harris, and her husband Doug Emhoff look on as they leave the US Capitol after the inauguration ceremony. Reuters
US President Joe Biden signs documents in the President's Room at the US Capitol following the inauguration ceremony. Bloomberg
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US President Joe Biden speaks during the 59th Presidential inauguration in Washington. Reuters
US President-elect Joe Biden is sworn in as the 46th president of the United States during the 59th presidential inauguration in Washington. Bloomberg
Joe Biden is sworn in as the 46th President of the United States as his spouse Jill Biden holds a bible on the West Front of the Capitol in Washington, DC. Reuters
Kamala Harris is sworn in as vice president by Supreme Court Justice Sonia Sotomayor as her husband Doug Emhoff holds the Bible during the 59th Presidential Inauguration at the US Capitol in Washington, DC. AP
Social distancing audience during the inauguration of Joe Biden as the 46th President of the United States. Reuters
Lady Gaga sings the National Anthem at the inauguration of US President-elect Joe Biden. AFP
Lady Gaga sings the National Anthem as US Vice President Mike Pence and Vice President-elect Kamala Harris look on. Reuters
From left: Doug Emhoff, US Vice President-elect Kamala Harris, incoming US First Lady Jill Biden, US President-elect Joe Biden arrive for the inauguration of Joe Biden as the 46th US President at the US Capitol in Washington, DC. AFP
Former President Barack Obama and his wife Michelle arrive for the 59th Presidential Inauguration at the US Capitol for President-elect Joe Biden. AP Photo
Former US President Bill Clinton arrives with former Secretary of State Hillary Clinton to the inauguration of US President-elect Joe Biden on the West Front of the US Capitol. AFP
Former US President George W. Bush and his wife Laura Bush arrive for the inauguration of Joe Biden as the 46th President of the United States on the West Front of the US Capitol. Reuters
Family members of Vice President-elect Kamala Harris attend the inauguration of US President-elect Joe Biden on the West Front of the US Capitol. AFP
The view from the podium where Joe Biden will speak after being sworn-in during the 59th Presidential Inauguration at the US Capitol in Washington, DC. EPA
Flags decorate the "Field of Flags" at the National Mall near the Washington Monument ahead of the inauguration of US President-elect Joe Biden. AFP
President-elect Joe Biden and his wife Jill Biden attend a church service before his presidential inauguration at St Matthews Catholic Church in Washington. Reuters
President-elect Joe Biden, his wife Jill Biden, Vice President-elect Kamala Harris and her husband Doug Emhoff attend a church service before his presidential inauguration at St. Matthews Catholic Church. Reuters
The West Front of the US Capitol is prepared for the inauguration of US President-elect Joe Biden in Washington, DC. AFP
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President Donald Trump and first lady Melania Trump wave to a crowd as they board Air Force One at Andrews Air Force Base. AP Photo
President Donald Trump speaks to crowd before boarding Air Force One at Andrews Air Force Base. AP Photo
The sun rises behind the US Capitol as preparations are made prior to the 59th inaugural ceremony for President-elect Joe Biden and Vice President-elect Kamala Harris on the West Front of the US Capitol in Washington. AFP
Updated: January 21, 2021, 12:42 PM