Will the iPhone Duo send folding smartphones mainstream?

Has Apple just triggered another paradigm shift in smartphone design? And what's behind Donald Trump's announcement that his triumphal arch will be a base for drones and snipers?

In this episode, Dezeen editor Tom Ravenscroft joins features editor Nat Barker and design editor Jennifer Hahn to discuss Apple's first folding phone.

Then, they consider Trump's surprise announcement that the triumphal arch planned for Washington DC will be a "top grade military complex".