ISO_3166-1_alpha-3

// List from http://en.wikipedia.org/wiki/ISO_3166-1_alpha-3 — That first line is a bit long ;)
let countries = ["Aruba":"ABW","Afghanistan":"AFG","Angola":"AGO","Anguilla":"AIA","Åland Islands":"ALA","Albania":"ALB","Andorra":"AND","United Arab Emirates":"ARE","Argentina":"ARG","Armenia":"ARM","American Samoa":"ASM","Antarctica":"ATA","French Southern Territories":"ATF","Antigua and Barbuda":"ATG","Australia":"AUS","Austria":"AUT","Azerbaijan":"AZE","Burundi":"BDI","Belgium":"BEL","Benin":"BEN","Bonaire, Sint Eustatius and Saba":"BES","Burkina Faso":"BFA","Bangladesh":"BGD","Bulgaria":"BGR","Bahrain":"BHR","Bahamas":"BHS","Bosnia and Herzegovina":"BIH","Saint Barthélemy":"BLM","Belarus":"BLR","Belize":"BLZ","Bermuda":"BMU","Bolivia, Plurinational State of":"BOL","Brazil":"BRA","Barbados":"BRB","Brunei Darussalam":"BRN","Bhutan":"BTN","Bouvet Island":"BVT","Botswana":"BWA","Central African Republic":"CAF","Canada":"CAN","Cocos (Keeling) Islands":"CCK","Switzerland":"CHE","Chile":"CHL","China":"CHN","Côte d'Ivoire":"CIV","Cameroon":"CMR","Congo, the Democratic Republic of the":"COD","Congo":"COG","Cook Islands":"COK","Colombia":"COL","Comoros":"COM","Cabo Verde":"CPV","Costa Rica":"CRI","Cuba":"CUB","Curaçao":"CUW","Christmas Island":"CXR","Cayman Islands":"CYM","Cyprus":"CYP","Czech Republic":"CZE","Germany":"DEU","Djibouti":"DJI","Dominica":"DMA","Denmark":"DNK","Dominican Republic":"DOM","Algeria":"DZA","Ecuador":"ECU","Egypt":"EGY","Eritrea":"ERI","Western Sahara":"ESH","Spain":"ESP","Estonia":"EST","Ethiopia":"ETH","Finland":"FIN","Fiji":"FJI","Falkland Islands (Malvinas)":"FLK","France":"FRA","Faroe Islands":"FRO","Micronesia, Federated States of":"FSM","Gabon":"GAB","United Kingdom":"GBR","Georgia":"GEO","Guernsey":"GGY","Ghana":"GHA","Gibraltar":"GIB","Guinea":"GIN","Guadeloupe":"GLP","Gambia":"GMB","Guinea-Bissau":"GNB","Equatorial Guinea":"GNQ","Greece":"GRC","Grenada":"GRD","Greenland":"GRL","Guatemala":"GTM","French Guiana":"GUF","Guam":"GUM","Guyana":"GUY","Hong Kong":"HKG","Heard Island and McDonald Islands":"HMD","Honduras":"HND","Croatia":"HRV","Haiti":"HTI","Hungary":"HUN","Indonesia":"IDN","Isle of Man":"IMN","India":"IND","British Indian Ocean Territory":"IOT","Ireland":"IRL","Iran, Islamic Republic of":"IRN","Iraq":"IRQ","Iceland":"ISL","Israel":"ISR","Italy":"ITA","Jamaica":"JAM","Jersey":"JEY","Jordan":"JOR","Japan":"JPN","Kazakhstan":"KAZ","Kenya":"KEN","Kyrgyzstan":"KGZ","Cambodia":"KHM","Kiribati":"KIR","Saint Kitts and Nevis":"KNA","Korea, Republic of":"KOR","Kuwait":"KWT","Lao People's Democratic Republic":"LAO","Lebanon":"LBN","Liberia":"LBR","Libya":"LBY","Saint Lucia":"LCA","Liechtenstein":"LIE","Sri Lanka":"LKA","Lesotho":"LSO","Lithuania":"LTU","Luxembourg":"LUX","Latvia":"LVA","Macao":"MAC","Saint Martin (French part)":"MAF","Morocco":"MAR","Monaco":"MCO","Moldova, Republic of":"MDA","Madagascar":"MDG","Maldives":"MDV","Mexico":"MEX","Marshall Islands":"MHL","Macedonia, the former Yugoslav Republic of":"MKD","Mali":"MLI","Malta":"MLT","Myanmar":"MMR","Montenegro":"MNE","Mongolia":"MNG","Northern Mariana Islands":"MNP","Mozambique":"MOZ","Mauritania":"MRT","Montserrat":"MSR","Martinique":"MTQ","Mauritius":"MUS","Malawi":"MWI","Malaysia":"MYS","Mayotte":"MYT","Namibia":"NAM","New Caledonia":"NCL","Niger":"NER","Norfolk Island":"NFK","Nigeria":"NGA","Nicaragua":"NIC","Niue":"NIU","Netherlands":"NLD","Norway":"NOR","Nepal":"NPL","Nauru":"NRU","New Zealand":"NZL","Oman":"OMN","Pakistan":"PAK","Panama":"PAN","Pitcairn":"PCN","Peru":"PER","Philippines":"PHL","Palau":"PLW","Papua New Guinea":"PNG","Poland":"POL","Puerto Rico":"PRI","Korea, Democratic People's Republic of":"PRK","Portugal":"PRT","Paraguay":"PRY","Palestine, State of":"PSE","French Polynesia":"PYF","Qatar":"QAT","Réunion":"REU","Romania":"ROU","Russian Federation":"RUS","Rwanda":"RWA","Saudi Arabia":"SAU","Sudan":"SDN","Senegal":"SEN","Singapore":"SGP","South Georgia and the South Sandwich Islands":"SGS","Saint Helena, Ascension and Tristan da Cunha":"SHN","Svalbard and Jan Mayen":"SJM","Solomon Islands":"SLB","Sierra Leone":"SLE","El Salvador":"SLV","San Marino":"SMR","Somalia":"SOM","Saint Pierre and Miquelon":"SPM","Serbia":"SRB","South Sudan":"SSD","Sao Tome and Principe":"STP","Suriname":"SUR","Slovakia":"SVK","Slovenia":"SVN","Sweden":"SWE","Swaziland":"SWZ","Sint Maarten (Dutch part)":"SXM","Seychelles":"SYC","Syrian Arab Republic":"SYR","Turks and Caicos Islands":"TCA","Chad":"TCD","Togo":"TGO","Thailand":"THA","Tajikistan":"TJK","Tokelau":"TKL","Turkmenistan":"TKM","Timor-Leste":"TLS","Tonga":"TON","Trinidad and Tobago":"TTO","Tunisia":"TUN","Turkey":"TUR","Tuvalu":"TUV","Taiwan, Province of China":"TWN","Tanzania, United Republic of":"TZA","Uganda":"UGA","Ukraine":"UKR","United States Minor Outlying Islands":"UMI","Uruguay":"URY","United States":"USA","Uzbekistan":"UZB","Holy See (Vatican City State)":"VAT","Saint Vincent and the Grenadines":"VCT","Venezuela, Bolivarian Republic of":"VEN","Virgin Islands, British":"VGB","Virgin Islands, U.S.":"VIR","Viet Nam":"VNM","Vanuatu":"VUT","Wallis and Futuna":"WLF","Samoa":"WSM","Yemen":"YEM","South Africa":"ZAF","Zamba":"ZMB","Zimbabwe":"ZWE"]

var country : String? // e.g. "Germany"
    
var countryCode : String? { get {
  if let name = country, code = countries[name] {
    return code // will return "DEU"
  }
  return nil
} }

// And if anyone has a 2-chars <-> 3-chars list, I'm taking it. It sure is totally risky to have the full names. No need to mention I didn't check each of the 249 countries!