Yesterday, I touched on how the full damning scale of the president’s pressure campaign against Ukraine can’t be understood without being aware of what’s been happening in Ukraine over the last several years, the U.S.’s relationship to that country, and a larger Russian strategy to confront and diminish America’s role in the world. Over at Politico, Molly McKew provides an excellent in-depth review of this vital context, which if anything made me think I had understated the importance of America’s support of Ukraine. I suspect that support for impeachment will only increase as Americans come to collectively grasp that Ukraine has effectively been invaded by Russia, is effectively at war with that country, and that Trump’s pressure on the Ukrainian president is already yielding Russia benefits in its subversion of a democratic neighbor. Americans don’t need to become experts on Ukrainian politics or Russia’s geopolitical ambitions, but to be unacquainted with these basic facts is to not grasp the full depth of the president’s betrayal.