«The alien nation» represents the country you know as Turkey because Turkey will contain so many internal factions – «will divide the spoils»; that’s why it will start a war with Greece so people will concentrate on the war rather than the internal problems that are taking place within their country. While Turkey will have the support of the Russians, Greece will not have the support of other countries. It will ask for help from Italy, the United States and other countries, but they will all stay neutral.
«Saturn in dreadful aspect in Mars» refers to the fact that this war will happen when Saturn will be in its ruling position of Capricorn, and Mars will be in Aries. The war will only last for a couple of months. There’ll be fire in the great city of Athens but they are not going to burn the Parthenon.