By William Watts and Barbara Kollmeyer, Market Watch

Oil shocks aren’t what they used to be.

In 1990, the decision by Iraqi leader Saddam Hussein to invade Kuwait sent oil prices soaring, serving to further slow a U.S. economy headed into recession. On Thursday, crude prices briefly jumped back above the $100-a-barrel threshold for the first time in more than seven years after Russia’s Vladimir Putin ordered an invasion of Ukraine.