Re. #1: I'm not sure what you mean by "different ground". They differ in their POV: While Notable assassinations of the Sri Lankan Civil War is written according to WP:NPOV, Assassinations and murders attributed to the LTTE is functionally a WP:POV fork. (I say "functionally" because it historically preceded the other article, so it hasn't been created with that intention. However, I feel that the decision to keep a POV version in addition to an NPOV version amounts functionally to the same as creating a POV fork.) That is certainly not a reason to keep the latter.

 Re. #2 & #3: I assume you're talking about WP:SIZE. There is absolutely no reason to be worried about that:
 WP:SIZE is not a policy, but a guideline, so it the statement "itis agaisnt wikipedia policy" is simply wrong.
 The guideline says: "Readers may tire of reading a page much longer than about 6,000 to 10,000 words". The article body currently has 935 words, so we're not even close by any stretch of the imagination. 
 Even if we were close, the guideline specifically says: No need for haste.
 Even if we were beyond the recommandation, there are many other ways to split articles. Splitting it by POV is not the way to do it. 

 In conclusion, I am not convinced by any of the arguments; I don't see any benefit for Wikipedia if we kept the "... LTTE" article. 

 Since this is not an official mediation, and since the three opposing editors have not applied for WP:SLR membership, I have no mandate or obligation to represent them. Nevertheless, I want to regard their needs. The fact that we see some unconvincing arguments could indicate that there are other, unexpressed, needs which the "... LTTE" article satisfies. If that is the case, then there could be more at stake than just a harmless redirect. If that is the case, then I recommend bringing it up on WP:AFD. —