Implications of the U.S. policy reversal

From the BBC World Service: A new law comes into force in Australia today, banning children under 16 from some of their favorite social media platforms, including Snapchat, TikTok, and Instagram. And as you'd expect, most teens aren’t happy about it, though many parents see it as the government standing up to American Big Tech. Also, Nvidia is now authorized to sell advanced AI chips to China, and President Donald Trump says the U.S. government will be taking a 25% cut of sales.