European Parliament identifies HAARP as weapon -- No, really: it's outlined in parliamentary documentation
The 1999 document, entitled "Report on the environment, security and foreign policy", like most that come out of European Parliament, is large and unwieldy, so here is the particular line in question:
"T. whereas, despite the existing conventions, military research is ongoing on environmental manipulation as a weapon, as demonstrated for example by the Alaska-based HAARP system,"