Rishi Sunak becomes the 5th UK prime minister in just six years; Wall Street executives and some of the US’ wealthiest investors from gathering in Riyadh for a conference that's nicknamed ‘Davos in the Desert’.; China's economy faces a number of challenges at home and abroad. Find out these on Global Chit Chat, where we bring you up to speed with top developments in geopolitics that are important but lesser-known.

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