Europe’s financial sector has reached “peak uncertainty” as regulators and banks rush to stave off the harshest effects of Brexit, cloud software company Salesforce is in talks to buy Slack, and Facebook allowed several thousand adverts and posts that violated UK law earlier this year. Plus, the FT’s economics editor, Chris Giles, explains why UK chancellor Rishi Sunak is warning of an ‘economic emergency’. Europe's finance sector braced for 'peak uncertainty' ahead of January  ft.com/editor/1c38d0eb-7bf5-4fca-a04b-055a360145bd? Salesforce in talks to buy Slack in huge cloud software deal ft.com/content/d47f5ae9-d1fe-4c68-ba95-7ad6f60c4cfa Facebook allowed thousands of illegal ads in UK until they were reported  ft.com/editor/1aba8d75-823e-488f-88fe-15ee51f3f0ab? Sunak warns of ‘economic emergency’ as borrowing hits record £394bn  ft.com/content/8250fec7-0581-477e-a525-bc2ab2dd5a11   See acast.com/privacy for privacy and opt-out information.