Traders thought the tweet, actually referring to an attack during the Yom Kippur War of 1973, was announcing that Israel had just bombed Syrian airports.
"Obviously this was part of our Yom Kippur Twitter series. The facts are there and simple to read. It was apparent within the Tweet itself," an IDF spokesman told Reuters.
"Front-month Brent crude prices rallied from $110.40 a barrel at 10:20 a.m. EDT -- just before the Tweet -- to as high as $111.50 just after 11 a.m., as trading volumes rose. By 1 p.m. oil was up $2.68 a barrel to $111.74, its highest in a month," Reuters reported.