That's why they start this bullsh!t.
Interested to see a description of how America started the invasion of Crimea. Anyway, it depends whether you define bullsh!t as:
a) Sailing a solitary, unsupported warship in international waters
b) Fomenting unrest in a neighbouring state on the basis of unsubstantiated (and almost certainly false) threats of ethnic cleansing as a pretext to proxy invasion using suspiciously well-equipped and uniformly-dressed local 'militias', while repeating the story on national media until even Putin himself believes it!
No sign yet of any Russian-marked vehicles in eastern Ukraine. Anyone care to speculate on the fate of the commander whose unit omitted to delete their markings before going onto the streets of Crimea?