And of course the Ukranians were shelling in 2017, they were invaded in 2014.

Yes. By America

Cohen argues that the Ukrainian crisis, which unfolded in late 2013 and early 2014 and which led to Crimea’s annexation by (or “reunification with”) Russia and to the still ongoing US-Russian proxy war in eastern Ukraine, is a seminal event of the 21st century. It militarized and moved the new Cold War to Russia’s borders—in the form of a civil and proxy shooting war—indeed to inside a civilization shared for centuries by Russia and large parts of Ukraine. It implanted a toxic and dangerous political element in US, Russian, Ukrainian, and European politics, perhaps for at least a generation. And it has left Ukraine in near-economic ruin, with thousands of citizens dead and millions displaced and many more struggling to regain the quality of life they had before 2014. The events of 2014 also led to the ongoing NATO buildup on Russia’s western border in the Baltic region, yet another new Cold War front fraught with the possibility of hot war. Making things only worse, in late 2017, the Trump administration announced that it would supply the Kiev government with more, and more sophisticated, weapons, a step that even the Obama administration, which played a major detrimental role in the crisis, declined to take.