Some points: (1) using something like STIX seems reasonable; (2) debunking has been the most common response; (3) content deletion and account suspensions have

Some points: (1) using something like STIX seems reasonable; (2) debunking has been the most common response; (3) content deletion and account suspensions have been rare; (4) also EEAS is wondering "which (political) actor is best placed to implement efficient responses".