So while we were busy playing Pokémon Go, Trump's bestest buddy Putin just moved nuclear weapons carriers into the Crimea. Russia deploys nuclear weapons carriers in Crimea
Putin's had a hard-on Crimea for many years, even before being BFF's with Trump. Many people believe that Crimea does in fact belong to Russia, but I know that the Ukraine has other things to say about that. Sounds like something we don't want to be involved in...
And the Crimean Tatars may have a few things to say too, about both Russia and the Ukraine although I think many wouldn't say in public.
They said plenty in this article; How popular are Putin and Obama in Crimea and Eastern Ukraine? (https://www.washingtonpost.com/blogs/monkey-cage/wp/2015/01/22/how-popular-are-putin-and-obama-in-crimea-and-eastern-ukraine/)