Twitter’s user growth fell short of expectations for the second quarter in a row, more than 70 investors call on Amazon to stop interfering with a unionisation effort, and Huawei asks a US court to overturn the Federal Communication Commission ruling that labels the telecoms company a security threat. Plus, the FT’s global China editor, James Kynge, explains how US-China investment continues despite political tension.Twitter warns of slowing user growth as pandemic surge fades https://www.ft.com/content/ff84e6c2-a937-4b88-bd8c-df8bcaa1ee7eHuawei challenges its designation as a threat to US securityhttps://www.ft.com/content/b7c2294d-9207-4fae-8fed-d63a80c99618Amazon must not interfere with US union effort, say investorshttps://www.ft.com/content/c7f24fbb-bb4e-489e-8a30-37708700e816US-China investment flows belie geopolitical tensionshttps://www.ft.com/content/b3dcc262-a153-4624-bc1d-156179d6e914 See acast.com/privacy for privacy and opt-out information.