Trump defends Arlington cemetery visit; Harris says she would appoint Republican to cabinet if elected – as it happened

This live blog is now closed. We're covering the Kamala Harris and Tim Walz CNN interview in a standalone blog here:

• Kamala Harris interview - live updates
• Harris pressed on policy shifts in CNN interview
• US army confirms Arlington worker pushed aside' by Trump staff

This evening, Kamala Harris will give her first sit-down interview since launching her presidential campaign, and will be joined by her running mate, Tim Walz. The Guardian's Robert Tait takes a look at what we can expect from the hotly anticipated encounter:

Kamala Harris on Thursday will give her first major interview since becoming the Democratic presidential nominee in what is being seen as a key test of her credibility after a prolonged honeymoon that has seen her surge ahead of Donald Trump in opinion polls.

The 21-second video shows Trump laying a wreath at the Tomb of the Unknown Soldier and several snippets of Trump joining Gold Star family members at gravesites of their loved ones in a part of the cemetery known as Section 60.

We lost 13 great great people, what a horrible day it was,' Trump says over somber music. We didn't lose one person in 18 months and then they took over the disaster, the leaving of Afghanistan.'