USA/UK invade places with effectively no british people, no right to be there, illegal by every international standard law..... nothing. A part of Ukraine which used to be part of Russian, which is full of Russian people wants to break away and be part of Russia.... Russia supports them........ EVIL, terrible, lets kill them all, blah blah blah.
UK/USA would do what Russia did in a heartbeat, in fact they do worse on a yearly basis for the past 50 years(funding and training Bin Laden for one). UK/USA are making a huge deal over it because they don't like the idea of Russia betting a bit stronger, but when it's them, it's fine to invade Iraq, support Israel, blow the crap out of Afghanistan, help support or topple governments in the region as and when they choose.
Russia haven't done anything wrong, the only thing prolonging the Crimea situation is US/UK being hypocritical and insisting on involving themselves rather than just letting Crimea sort itself out and do what it wants.
Yes Putin is being made a scapegoat, US/uk don't give a **** about 300 civilians, they care that it will help them in terms of preventing Russia annexing Crimea properly, it's political for them and for Putin.
They are all as bad as each other, they care about power, money and preserving both. If Crimea happened to have a history of us citizens being the majority population, they'd probably try and succeed and declare themselves part of America, with american support to break out, and Russia would complain it's part of the Ukraine.