Microsoft is investing $10 billion in OpenAI, whose artificial intelligence tool ChatGPT has become very popular since its introduction in November.

OpenAI's chat bot has been one of the driving forces behind the chipmaker's stock rally this year.

Apple Inc.'s mixed-reality headset is a ambitious attempt to create a 3D version of the iPhone's operating system, with eye- and hand-tracking systems that could set the technology apart from rival products.

Boris Pistorius, Germany's Defense Minister, said on Sunday that he expects a decision soon on the delivery of Leopard 2 tanks to Ukraine. Annalena Baerbock, Germany's Foreign Minister, meanwhile, said Berlin would not block Poland from sending its own Leopard 2s to Ukraine.

This move comes after layoffs and a deep stock swoon at the enterprise software giant.‍

Microsoft (MSFT) is a leading technology company with a market capitalization of over $1 trillion.

Western Digital and Kioxia are making progress in their merger talks and have come up with a rough structure that would eventually involve a dual-listing in Japan, according to sources familiar with the matter.‍