Obama's farewell address - as it happened

US President Barack Obama has used his final speech to thank the American people.

He gave his farewell address this afternoon in his hometown of Chicago, where he also delivered his victory speech eight years ago.

Key points

• Barack Obama, 55, made history as the country's first black president in 2008.
• His term will officially end with Donald Trump's inauguration on 20 January.
• His achievements include the Affordable Care Act, which Mr Trump has vowed to repeal, the Iran nuclear deal and new environmental safeguards.
• However, faced with a fierce Republican majority in Congress, Mr Obama struggled to advance much of his political agenda - including a promise to tackle gun violence.
• In today's farewell, he spoke about the need to protect democracy and avoid racial or religious division, and urged more action on climate change.
• He also thanked his vice-president and "brother" Joe Biden and his family.