Donald Trump names Ohio senator JD Vance as running mate

US-China relations have taken on a sharper focus, after Republican presidential nominee Donald Trump's newly-named running mate JD Vance identified China as the biggest threat to the US. The Ohio Senator said in an interview that, if elected, Trump's plans included resolving the Russia-Ukraine war. Mr Trump made a triumphant return to the public eye after an assassination attempt over the weekend. Simon Marks reports from Milwaukee.