Just making stuff up as he goes along.

Via Daily Caller:

The U.S. has a “sacred rule” that it does not leave any prisoners behind in warfare, regardless of circumstances, President Barack Obama claimed in a June 3 press conference in Poland.

Obama’s “sacred rule” is an important new principle in U.S. national security strategy, because it elevates the fate of any individual soldier — and their parents — above the needs of national security for 310 million Americans.

“We don’t condition” those prisoner trades, Obama said. “That’s what every mom and dad who sees a son or daughter sent over to a war theater should expect.”