Trump and Harris launch new attack ads - here's what they tell us

Donald Trump and Vice-President Kamala Harris have launched major ad campaigns targeting each other in key battleground states.

Harris's campaign is focusing on her career and critiquing her opponent. Meanwhile, the ex-president's campaign has reserved airtime this week for a major television ad attacking Harris's past comments on immigration.

The BBC's Anthony Zurcher analyses how both campaigns are intensifying their efforts as they vie for voter support.