I believe the implicit threat is releasing unredacted intel dumps, so very large torrent files with thousands of classified military intelligence documents they

I believe the implicit threat is releasing unredacted intel dumps, so very large torrent files with thousands of classified military intelligence documents they normally would not release, floating around encrypted with a few people close to Assange possessing the password(s) to leak them in case of being shut down though some Guardian journalist already leaked the password to one of the dumps years ago reporting on what Assange wrote on a napkin when they met which allowed Guardian readers to decrypt the whole archive. I think Assange is kind of crazy for playing brinkmanship with the world's intel agencies but I will definitely miss a lot of their leaks, for example that leaked CIA guide to bypassing airport security while undercover, where used as an example in the guide (if I remember correctly) a field agent using a diplomatic passport who was detected by airport screening trying to transit through European airports while having explosives residue on him, and how he successfully lied and talked his way out of being arrested while undercover. This of course leads to the question, why are intel agents assembling/transporting explosives around European cities and one of the reasons I liked having Wikileaks around to embarass these agencies and their invisible shenanigans but I guess the party is over.