Why do we always have to stick our noses in shit that isn't really our business? sometimes you just gotta let other countries handle their biz without interfering.
Because the US started this entire mess by funding and backing the extreme right wing parties in Ukraine. The central responsibility for military escalation rests with the US and Germany, along with EU allies, who systematically intervened to uproar popular dissatisfaction with the corrupt regime of Yanukovych behind ultra-right nationalist and fascist organizations. Their goal has always been to topple the elected government and install a Pro west regime.
German Chancellor Angela Merkel met with leaders of the right-wing opposition. Her party, the Christian Democratic Union, financially supported the Udar party of former boxer Vitali Klitschko. Top European Union officials marched with the Svoboda party fascists and Right Sector armed gangs in Kiev’s central square.
US Undersecretary of State for Europe and Asia Victoria Nuland made at least four trips to Kiev, joining the neo-fascist “protesters” and meeting with opposition figures Klitschko, Arseny Yatsenyuk and the notoriously anti-Semitic Svoboda leader Oleh Tyahnybok. She acknowledged in December that the US had poured $5 billion into Ukraine since the 1990s to build up US proxy forces in the country.
Nuland’s leaked telephone conversation with Ambassador to Ukraine Geoffrey Pyatt, in which they discussed installing Yatsenyuk after toppling Yanukovich, exposed the degree to which Washington was manipulating events in the country.
[...]
The coup in Ukraine represents a major milestone in this campaign. Effective US control of Ukraine opens up the possibility of US or US-linked troops being stationed directly on Russia’s western border. It threatens Russia’s Black Sea fleet in Crimea, which is Moscow’s only water route into the Eastern Mediterranean, the Balkans and the Middle East. It will be used as well to push Georgia into NATO and fuel separatist and secessionist agitation by a wide variety of ethnic and religious minorities within Russia.
The US violated the sovereignty of a country by doing this, so when the question of what Russia has done in response - sending troops to Crimea to protect it's interests and Russian ethnic Russian populations, it's very important to undeterstand the role the west has been playing. It is the west that bears central responsibility to military escalation. Russia's intervention was an inevitable outcome of the reckless game the US and EU have been playing by supporting the extreme right wing parties. This is the US's attempt of an overall policy to destabilize Russia, as they attempted in Syria as well.