"On Wednesday, the so-called “trinity” of the Swiss National Bank, regulator Finma and the minister of finance summoned Credit Suisse chair Axel Lehmann, who was in Saudi Arabia for a conference, and chief executive Ulrich Körner for a call.
In the same meeting where they authorised the SFr50bn backstop, they also delivered another message: “You will merge with UBS and announce Sunday evening before Asia opens. This is not optional"
https://www.ft.com/content/3080d368-d5aa-4125-a210-714e37087017