Since the end of World War Two, the USA has invaded a number of countries that were considered to be involved in threatening political developments – Korea, Vietnam, Iraq are only the most prominent – but there is one allied contry, and NATO member, that didn’t have to be invaded or occupied to have US troops in strength presnt on its soil for more than half a century – Iceland. After the war, and despite a great deal of opposition, Iceland agreed to have US troops stay on to protect a country without armed forces from aggression. In 2006, against the will of the Icelandic government, the US withdrew its troops from its substantial air force base in Keflavik, leaving the 300,000 Icelanders without a military presence. Now the lands from which Viking colonialists sailed forth to settle the uninhabited island more than a thousand years ago – Norway and Denmark – will sign a military agreement with Iceland in Oslo on Thursday. Norway will station military planes in Keflavik and Denmark will augment the civilian Icelandic Coast Guard – which defeated the UK in the famous Cod War – with Danish military ships. Only in case of a real invasion would the US get involved, as would all NATO countries according to the NATO Charter.