The traditionally neutral Swiss army has staged an unplanned invasion after troops blundered into Liechtenstein. A 171-strong Swiss company got two kilometres into its neighbour before realising the mistake and heading back. Liechtenstein authorities made light of the intrusion, saying they only knew about it when the Swiss told them.It sounds like it's time for the Swiss army to have a GPS tool in their famous knives. Or maybe just something more accurate than a cheap cuckoo clock to know the time when navigating by the stars. Or just perhaps it's something more sinister than that. The Swiss population has been rising, are they practising for all-out conquest to provide leibensraum?