eldavojohn writes "Obama's proposed ban on space weapons is a complete 180 from George W. Bush's stance on them. Space.com looks at the two sides of the issue and quotes Michael Krepon explaining, 'The Bush administration rejected space diplomacy. We refused to negotiate on any subject that could limit US military options. We have a shift from an administration that was very dismissive of multilateral negotiations [as a whole], to an administration that is open to that possibility if it improves US national security.' You may recall discussing the necessity of space based weapons and Michael Krepon from 2005."