US President Trump has proposed a Golden Dome defence system that includes missile interceptors in space. But the idea would cost hundreds of billions of dollars – and could accelerate the weaponisati

Elon Musk's social media platform X was largely restored for most users after an outage that impacted tens of thousands of users in the United States on Saturday, according to outage tracking website Downdetector.com, following which he said that he is "back to spending 24/7" at his companies.