Two weeks ago, I wrote about a U.S. spy satellite that had gone haywire and might need to be shot down. I noted how diplomatically sensitive it would be for the United States to do so after telling China that anti-satellite tests are a big no-no. Some commentators downplayed the possibility that the United States would really shoot the satellite down, but now comes word that it's gonna happen: The U.S. military will use its missile-defense system to blow the errant satellite to smithereens.

Mind you, a missile-defense system is not supposed to be a dual-use satellite killer. U.S. officials have pledged compliance with space and weapons treaties by giving other countries advance notice before shooting off space missiles. They also insist the move is necessary to prevent contamination from toxic substances and is not a showcase of U.S. weapons capability. Still, in the wake of the Chinese satellite missile hoopla, it smacks of "Anything you can do, I can do better."

What's more, shooting the satellite down could create orbital debris, which was a major point of criticism after the Chinese experiment. U.S. officials insist the Chinese test was different in nature as it was higher in altitude and the resulting debris poses a much longer-term threat. They estimate the mess from the U.S. operation will fall to the Earth within a few weeks, whereas debris from the Chinese test will be a danger for decades.

Meanwhile, Russia and China formally proposed a treaty banning space weapons this week, a move swiftly opposed by the White House. Russian Foreign Minister Sergei Lavrov argues that space weaponization would cause a "chain reaction" and would start another "arms race."  Too late, Sergei -- the weaponization of space has already begun.