The seemingly unstoppable rise of Bitcoin continued Tuesday with the cost of a single unit of the digital currency rising above $50,000 for the first time.

China’s government on Thursday called on Washington to drop efforts to expel three state-owned Chinese phone companies from the United States in a new clash over technology and security.

Hackers have spent years eavesdropping on the diplomatic communications of European Union officials, a U.S. cybersecurity firm said Wednesday, an operation disrupted only after researchers discovered hundreds of intercepted documents lying around on the internet.