Trump's court battle to stay on ballot paper, the climate activists' fight to take emitters to court, King Charles' illness, super luxury submarines

The Trump court cases continue to swirl - but could one due out soon affect his chances of appearing on ballot papers? A climate activist will sue seven of the country’s biggest polluters after a five year fight to get the go ahead. Mike Smith joins Newsable to explain why he persevered for so long. What happens with the Royal duties if Charles has periods when he is unwell ? Plus move over super yachts, it's time for super submarines.