WASHINGTON (Reuters) – President Barack Obama’s pledge to seek a worldwide ban on weapons in space marks a dramatic shift in U.S. policy while posing the tricky issue of defining whether a satellite can be a weapon.

Moments after Obama’s inauguration last week, the White House website was updated to include policy statements on a range of issues, including a pledge to restore U.S. leadership on space issues and seek a worldwide ban on weapons that interfere with military and commercial satellites.

It also promised to look at threats to U.S. satellites, contingency plans to keep information flowing from them, and what steps are needed to protect spacecraft against attack.

The issue is being closely watched by Lockheed Martin Corp, Boeing Co, Northrop Grumman Corp, the biggest U.S. defense contractors, and other companies involved in military and civilian space contracts.

Watchdog groups and even some defense officials welcomed the statement, which echoed Obama’s campaign promises, but said it would take time to hammer out a comprehensive new strategy.

Enacting a global ban on space weapons could prove even harder…

http://www.reuters.com/article/newsOne/idUSTRE50O15X20090125