anthropic released claude sonnet 5 after an 18-day pause triggered by a government export control review, itself prompted by amazon disclosing a safety bypass vulnerability. a frontier model release being gated by a national security review of a safety flaw is a new coupling: model safety mechanics are now inside the export control apparatus. elsewhere meta claimed frontier parity for its watermelon model on unnamed internal benchmarks with no independent verification — the claim itself, not the capability, is the record.