Re. "invasion"

"The more you hype it, the more you diagnose the severity of the illness, the more you're obligated, either morally, politically or practically, to find a cure," said Aaron David Miller, a foreign policy expert and scholar at the Woodrow Wilson International Centre for Scholars

"And there's a certain reality here. There's a tendency on the part of this administration to allow its rhetoric to exceed its capacity to deliver," Miller said "We're not going to be able blunt or stop Putin's objectives in eastern Ukraine any more than we could stop the aggrandizement of Crimea."

Elliott Abrams, a senior fellow at the Council on Foreign Relations, said officials avoid using the word for the same reason the U.S. wouldn't call Egypt's military ouster of former president Mohammed Morsi a coup or why some mass slaughters aren't referred to as genocide.

"Some words have both legal and emotional effects. And in the case of invasion, it's emotional and political," Abrams said.

"I think they don't want to use the word invasion because it makes harder the next question: And what are you going to do about it?"

source: CBC Canada