Drugs, alcohol and a suspicious gun: Hunter Biden trial explained

Hunter Biden, son of US President Joe Biden, is the first child of a sitting president to be a criminal defendant.

Prosecutors allege the younger Biden, 54, lied about his drug use on application forms when he purchased a handgun in 2018.

As the prosecution delivers closing arguments, the BBC's Bernd Debusmann Jr reports from court on what's at stake for the president's son.

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