Taco Cowboy writes: Washington and Beijing have established an emergency 'space hotline' to reduce the risk of accidental conflict. Several international initiatives are already in train to seal a space treaty to avoid a further build-up of weapons beyond the atmosphere. However, security experts say the initiatives have little chance of success. A joint Russia-China proposal wending its way through the UN was not acceptable to the US. An EU proposal, for a "code of conduct" in space, was having diplomatic "difficulties" but was closer to Washington's position.