Welcome to The Week that Was, a video series from The National. Watch as our resident current affairs commentator, British journalist and broadcaster Tim Marshall, recounts the big stories of the week from here, and around the world. <strong>_______________</strong> <strong>Related:</strong> <strong><a href="https://www.thenational.ae/business/economy/saudi-arabia-entertains-world-s-business-chiefs-with-robots-and-future-cities-1.670598">Saudi Arabia entertains world's business chiefs with robots and future cities</a></strong> <strong><a href="https://www.thenational.ae/business/economy/saudi-arabia-s-pif-agrees-to-invest-1bn-in-virgin-galactic-spaceship-company-1.670618">Saudi Arabia’s PIF agrees to invest $1bn in Virgin Galactic spaceship company</a></strong> <strong><a href="https://www.thenational.ae/world/asia/mattis-warns-massive-response-to-north-korea-nuclear-weapon-use-1.670817">Mattis warns 'massive' response to North Korea nuclear weapon use</a></strong>