How strong is the connection between North Korea and China?

A formidable iron curtain separates China and its neighbour, North Korea. Even before Covid-19, North Korea had a reputation as the most isolated society on Earth. Since the start of the pandemic, North Korea seems to have become even more isolated and its link to China is almost closed. Dr Edward Howell, Lecturer in Politics at New College, University of Oxford gives his appraisal of the complex relationship between China and North Korea in this discussion with podcast host Duncan Bartlett, ...