Ensuring that trade is fair is harder when some companies enjoy the support, overt or covert, of a national government.

ECONOMIST: Emerging-market multinationals

How can you ensure a fair trading system if some companies enjoy the support, overt or covert, of a national government?

ECONOMIST: The visible hand

"There was no overt deal for support, there was no covert deal, there were no nods or winks, " he said.

CNN: STORY HIGHLIGHTS

Studies show that while bullying can manifest as overt bad behavior like physical violence or screaming, more often than not it can be more covert.

CNN: Our unhealthy love of reality TV bullying