How to describe the overall issue of what the agreement meant in terms of Vilnius  IMO we havent directly addressed the problem of how to present the point that a lot of of historians along with EB by my research hence the reflist below see the agreement as leaving Vilnius on the LT side Sorry I dont think WP articles can reflect Piotrus assertion that they were all repeating errors   Policy is a little contradictory Some guidance in WPWeasel When contrasting a minority opinion with a more widely held onefor example Although Brahmss work is part of the classical music canon Benjamin Britten has questioned its value Brahmss importance is almost but not quite an undisputed fact its not necessary to source the majority opinion when describing the minority one On the other hand WPReliable sources goes For example even if every scholarly reliable source located states that the sky is blue it would be improper synthesis to write that there is a scientific consensus that the sky is blue So maybe we should kick this up to some noticeboard Or noticebard