They were tribal members who came up with an unbreakable code in their complex language that was adopted by American forces in the Pacific during World War II and used to confound the Japanese.

VOA: standard.2010.03.22

And that helps explain the unbreakable theme park business, one piece of the magic of Disney.

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And now, we have come together to reaffirm the unbreakable bond between us.

WHITEHOUSE: President Obama��s Bilateral Meeting with NATO Secretary General Rasmussen | The White House

Mr Rasmussen said the Chicago summit had been "highly successful" in "renewing the unbreakable bond between North America and Europe".

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