Among different important issues, which are discussed in Political Demography theissue of global ageing becomes more and more pressing every year. It is sufficient to takeinto account the point that within two forthcoming decades a rapid global increase in thenumber of retirement-age persons will lead to its doubling within this fairly small historicalperiod. The concerns about population ageing apply to both developed and many developingcountries and it has turned into a global issue. In forthcoming decades the populationageing is likely to become one of the most important processes determining the future societycharacteristics and the direction of technological development.The present volume of the Yearbook (which is the fifth in the series) is subtitled 'PoliticalDemography & Global Ageing'. It brings together a number of interesting articlesby scholars from Europe, Asia, and America. They examine global ageing from a varietyof perspectives.This issue of the Yearbook consists of two main sections: (I) Aspects of PoliticalDemography; (II) Facing Population Ageing.We hope that this issue will be interesting and useful both for historians and mathematicians,as well as for all those dealing with various social and natural sciences.