With the Ukraine conflict advancing to new and dangerous territory, Russia refuses to take Western sanctions lying down.
Led by autocrat Putin, the former Soviet nation is striking back, and as of mid-day Friday the blows remained primarily economic.
And that's where I want to focus today...
Each side continues upping the ante, with ever stronger retaliatory sanctions.
Economic skirmishes like this can quickly escalate into all-out trade wars, where even the victors lose.