Are we heading for space wars?

Would conflict on the ground between majors powers now inevitably spill over into space? Experts believe we rely so much on technology in orbit that satellites will become targets. Russia blowing up one of its own satellites has sparked a global debate about whether there are enough rules governing what countries are allowed to do in space. With so much important stuff up there, what are the chances of a conflict in space? With Tanya Beckett. (Nasa Space Shuttle Atlantis. credit Nasa)