Christian Science Monitor: President Obama’s declaration that he’d like to see “up to 90 percent” of the Gulf oil spill geyser contained in the next few weeks is a best-case scenario in a worst-case kind of disaster. From the beginning, BP has failed to meet expectations either to kill the well or contain the oil flowing from it. The containment dome clogged. The “top kill” failed. The “junk shot” accomplished nothing. Even the relatively successful “top cap” operation is apparently still leaking as much as …