Just over a week ago, the White House declared that ordering an American aircraft carrier into the Sea of Japan would send a powerful deterrent signal to North Korea and give President Trump more options in responding to the North's provocative behavior. We're sending an armada," Mr. Trump said to Fox News last Tuesday afternoon. The problem was that the carrier, the Carl Vinson, and the three other warships in its strike force were that very moment sailing in the opposite direction, to take part in joint exercises with the Australian Navy ... 3,500 miles southwest of the Korean Peninsula. White House officials said Tuesday that they had been relying on guidance from the Defense Department. Officials there described a glitch-ridden sequence of events ... which perpetuated the false narrative that a flotilla was racing toward the waters off North Korea. By the time the White House was asked about the Carl Vinson, its imminent arrival had been emblazoned on front pages across East Asia, fanning fears that Mr. Trump was considering a pre-emptive military strike. In South Korea ... fears of a full-blown war erupted. The government rushed to reassure the public that the Carl Vinson was coming only to deter North Korean provocations. After a week of war drums, fueled by the reports of the oncoming armada, tensions subsided when the weekend passed with only a military parade in Pyongyang and a failed missile test, [while] the Carl Vinson ... was thousands of miles from where most of the world thought it was.