Quiz: How Much Do You Know About Ukraine-Russia Tensions?

Fears of a major offensive are looming over Ukraine, with an unusually large number of Russian troops and equipment deployed to regions north and east of the Ukrainian border. Don’t forget the war that’s been ongoing in eastern Ukraine for more than seven years, pitting Ukrainian forces against Russia-backed fighters. Confused? Scared? How much do you really know about the situation? (By Mike Eckel)