(CNN) -- Australian authorities say that ISIS leaders ordered followers to behead someone on Australian soil as a "demonstration killing." Prosecutors say they uncovered a plot that was "clearly designed to shock and horrify" the public. Now that President Barack Obama has announced the United States will seek to degrade and destroy ISIS, should Americans worry they will become targets for similar plots from this ruthless terrorist group? ISIS has worked diligently to taunt the U.S. and its allies. The alleged plot in Australia, which triggered that country's largest ever anti-terrorist dragnet, is only the most recent example. Even before ISIS became well-known, British soldier Lee Rigby was butchered in a London street last year. There is a real possibility that Americans, too, will face the threat of such "demonstration killings" on U.S. soil.
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Authorities uncover suspected ISIS plot to behead someone in Australia to shock the public
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Frida Ghitis: ISIS works diligently to taunt the U.S. and its allies
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She says ISIS wants to turn the conflict into war between Islam and the West
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Ghitis: The U.S. and West must be strategic and smart in dealing with the brutal ISIS
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ISIS is gambling that drawing America and the West into the fight will make it stronger, but if the West is strategic and smart, this move will prove to be @placeholder' worst mistake.