How has something meant to be big and beautiful, has created so much bad blood between he world's richest man, and the President of the world's richest economy?

With the US stock markets just open we'll look at the continuing fall out from President Trump's explosive social media bust up with Elon Musk - and what it means for some of Mr Musk's most important companies like the electric car firm Tesla and Space X.

Also why is one of Germany's biggest investment funds pulling its investment in one of the world's biggest energy firms?