Very interesting tool, but it's biased and not neutral from the get go, because I explicitly formulated claim in neutral way, but it automatically rewrote it to be western/wikipedia POV and then immediately proceeded to verify it.
original neutral:
US DEPT OF DEFENSE/DNAVFAC planned renovations to School #05 in Sevastopol, Crimea in 2013 before Crimea became part of Russia in 2014
The United States Department of Defense, via the Naval Facilities Engineering Command (NAVFAC), planned renovations to School No. 5 in Sevastopol, Crimea in 2013, before Russia annexed Crimea in 2014.
And the follow up
The phrasing "Crimea became part of Russia" is more neutral than the phrasing "Russia annexed Crimea."
Yeah, so my personal conclusion that this tool is garbage, it checks western/US allied only LLM providers, that in turn search only for western/US allied sources/documents like BBC/NATO and result is what it is.