>>>it seems that the rebels captured quite a few of BUK systems, but fixed only one of them
>
>In that case, sanctions against Russia would be thoroughly unreasonable.

"Reasonable" may mean "there's a reason for it"... and the reason does exist, but it's completely unrelated to Ukraine. Russia keeps refusing to behave like a colony, is mostly out of debt, keeps giving the wrong answer to "to whom does your oil/gas belong", takes concrete steps to sidestep the WTO/MMF/WorldBank gang, doesn't know its place and generally misbehaves. And it moved its borders too close to the latest crop of NATO bases.