Follow the link in "Digital Trust Standards" to the "Criteria for Security and Trust in Telecommunications Networks and Services" (https://csis-website-prod.s3.amazonaws.com/s3fs-public/publi...). Political & Governance Criteria numbers 8 and 9 would seem to present problems for companies in the UK and US, both of which require suppliers to cooperate with the government in secret and unchallengeable ways.