The State of Trump's Union is a new 10-part series airing on The Last Word in the run-up to the US election in November.

We'll be talking to a variety of people with intelligent and informed views about the issues dividing and uniting the United States, where the country is politically, socially and economically, the dangers it's facing, where power lies and how it is used.

Our first guest is Samantha Power, former US ambassador to the United Nations from 2013 to 2017.

She spoke to Matt about international relations and the Trump administration's attempts to cut the country off from the rest of the world, as well as her hopes for America's future.