Timeline of Albanian history to 1993 cooperation signed with Yugoslavia; Yugoslav advisers and grain begin pouring into Albania. October<br> 26 October: Two British ships destroyed by mines off Albania's coast in the Straits of Corfu, see Corfu Channel Incident, . November<br> Albania breaks diplomatic relations with the United States after the latter withdraws its informal mission. 1947 April May<br> A United Nations commission concludes that Albania, together with Bulgaria and Yugoslavia, supported communist guerrillas in the Greek Civil War; Yugoslav leaders launch verbal offensive against anti-Yugoslav Albanian communists, including Hoxha; pro-Yugoslav faction begins to wield power. July<br> Albania refuses participation in the Marshall Plan of the
Islands of the Forth and other aids to navigation have been erected on the islands and skerries, one dating to the 17th century, but only one of the islands is still permanently inhabited. The area has a diversity of bird and sea life and the scientific name for the northern gannet is derived from this bird's connection with the Bass Rock. There are few islands off eastern Scotland and most of any size are in this group. Furthest east is the Isle of May, off the coast of Fife south of Crail. To the south in the outer Firth there is a group of