The reverberations of the plunging oil price are being felt around the globe

Here's a weekend read from Reuters on how its impacted in Russia, saying the country's economic recovery and "once-mighty savings war chest" are "on the line".

It also notes that the ruble rate is not far from its "record low hit 13 months ago".

Back then, Russia defended the currency by raising interest rates by 500 basis points overnight

A sharp rouble move lower in coming weeks could force a repeat of that action

There is more at the piece: How the oil collapse stole Russia's Christmas