"Marital arts"?

It’s Copyediting Fail day at JRE. First, from everyone’s favourite punching bag, Pravda:

Ha ha ha, yes, Pravda’s editors don’t know the difference between “is” and “are”. Snicker snicker. (Also, “must-have” takes a hyphen.)

But real news outfits aren’t immune to the odd stuff-up either. Look closely at this headline that hit the Reuters wire earlier today: