Eh, I’m not ruling Russia out, but the Ukrainians are a bunch clowns when it comes to safty.
That looks like a whole lot of munitions stored in one place and so close to the fighting in eastern Ukraine. What's the west to do? Give Ukraine more stuff to be blown up, thus not meeting other military needs? Go into full-out war defending Kiev (that coup never did represent the whole country) and ignoring the terrorism and security issues in Europe?
Amazing, the way the world keeps turning. Who could've ever written a book or produced a movie as far-fetched as it's all become?