While the second point can be argued, with the inevitable conclusion that DM forces were predominantly in the business of switching sides in order to save their skin and stay in whatever form of power, your first point where "at one point they [Tito's Partisans] were also prepared to collaborate with Germans and fight against the Allie" goes to nothing short of absurdity.Ivan Ž. wrote: 1) People's Liberation Army (partisans/communists); fought against Axis forces; shortly allies with DM's chetniks, soon afterwards fought against them and the old regime (monarchy); at one point they were also prepared to collaborate with Germans and fight against the Allies (which supported DM's chetniks at the time and it was expected that they'll land in Yug.), but this never happened
2) Yugoslav Army in Fatherland (Draza Mihailovic's chetniks/monarchists); fought against partisans (as mentioned above, they were allies for a short period) and against the Axis forces; later often collaborated with Axis to fight against partisans (but at the same time they also saved Allied pilots, which landed in Yug.); note: even when collaborating with Axis, they still supported their King in exile (who was in England at the time, with W. Churchill); note 2: I'm skipping Chetniks of other regions of ex-Yugoslavia in this text
Can you please, for my and the world's amusement, show one shred of evidence of any kind of collaboration, plan of collaboration, even a single photo linking Tito's forces to the Axis. Please do not amuse us with the mention of the March negotiations, which only went to the extent of prisoner exchange and a possible ceasefire. Please, elaborate on this new-age Chetnik propaganda.
Having an interest in guerrilla movements in general, I am aware of the new history revisionists in the Balkans. They come from all backgrounds, be it Bosnian, Croatian or in this case Serbian. The quote above is one such example. The ultimate aim, in my view, of these fabrications is to justify the latest horrors in their region, promote the notion of "century old conflicts", and erase all trace of unity amongst these people (who 50 years earlier knew better than to divide and slaughter each-other needlessly).