Ukraine is a newly independent state with a population of about 48 million. It inherited its national health system from the USSR. The Soviet system was conceived as part of a massively expensive socialist planning economy that was generally delivering poor value for money. Some aspects of the Soviet health system were, however, undoubtedly sound and certain public health measures were superior to those in the West. For example, infant mortality, despite possible underreporting, was probably lower in the USSR than in many Western countries (Anderson & Silver, 1986). The health system became increasingly corrupt and inefficient during the final years of the USSR's existence. Since independence, the health system has not been a state priority and has been chronically under-funded. In the past few years of rapid economic development in Ukraine, the share of the state budget allocated to the health system has remained static, leaving Ukraine in a disadvantaged state compared with other European countries (United Nations, 2007).

Ukraine, with a population of 46.2 million, is the second largest country in Europe, with an area of 603 700 km2. It is still recovering from the collapse of the Soviet Union in 1991, following the Soviet stagnation era (since the mid-1960s) and perestroika (from 1986), as well as the 1998 Russian financial crisis and Ukraine's 2004 Orange Revolution. These events have resulted in high levels of socio-economic disparity, political instability and a degraded healthcare infrastructure. These issues, in addition to traditionally high levels of alcohol consumption, have made binge drinking and alcoholism, among other addictions, major problems in Ukrainian society (Voloshin et al, 2003).

Mental healthcare in the countries of the former Soviet Union faces considerable challenges as result of the socio-economic transition. In this article we look at the changes in the Republic of Moldova. We identify weaknesses and strengths in the traditional hospital-based system and describe examples of the successful implementation of modern mental health services. We follow the reform process in mental health law and service provision in view of the recommendations from the Council of Europe (2004) for the protection of human rights of persons with mental disorder. Some of the information in this article was gathered during official visits to mental healthcare institutions in the Republic of Moldova in 2006.

Bosnia and Herzegovina (BH) is located on the western part of the Balkan Peninsula. It has an area of 51 210 km2 and a population of 3 972 000. According to the Dayton Agreement of November 1995, which ended the 1992-95 war, BH comprises two ‘entities’ - the Federation of Bosnia and Herzegovina (FBH) and the Republic of Srpska (RS) - and the District of Brcko. The administrative arrangements for the management and financing of mental health services reflect this. The FBH, with 2 325 018 residents, is a federation of 10 cantons, which have equal rights and responsibilities. The RS has 1 487 785 residents and, in contrast, a centralised administration. Brcko District has just under 80 000 residents.

Peru is a land of mixed cultures, multiple ethnic heritages and severe economic inequities. Its history goes back thousands of years, from accounts of the first inhabitants of the continent to the impressive Inca Empire, the rich Viceroyalty of Peru and the modern republic, which boasts one of the highest economic growth rates in South America. Yet, in spite of such complex cultural development, or perhaps because of it, 21st-century Peruvians have substantial difficulties establishing a national identity and recognising each other as members of the same community.

The Kingdom of Bahrain is an archipelago of 33 islands, located in the Arabian Gulf, covering 2400 km2. The main island, Manama, is the nation's capital. The total population stands at 742 562, 62.3% of whom are local Bahrainis and the remaining 37.7% expatriates (Central Statistics Organisation Directorate, 1991). Bahrain first entered the historical stage around 3000 BC, and for almost 2000 years was the centre of the old Dilmun civilisation (Bibby, 1969). Dilmun was perceived as a sacred land by the Sumerians and Babylonians; it was a burial ground for their dead, and Bahrain has over 100 000 burial mounds each containing 200-250 bodies. In the old Babylonian epic of Gilgamesh, which antedates Homer's Iliad, Dilmun is described as a paradise where the worthy enjoy eternal life (Clarke, 1981).

Sudan occupies 2 500 000 km2 in East Africa. It has borders with nine countries, two of which are Arab: Egypt, Libya, Kenya, Uganda, Congo, Chad, the Central African Republic, Ethiopia and Eritrea. Sudan is the largest country in Africa. The heart of the country, in terms of population, lies at the confluence of the Blue and White Niles. The complex of the ‘three towns', comprising the three largest cities, Khartoum, Khartoum North and Omdurman, is situated there and contains almost 20% of the population. The total population of Sudan is about 35.4 million (projected from the 2005 census). The urban population was estimated at 33% of the total. About 2.2 million are still entirely nomadic. Sudan's peoples are as diverse as its geography. There are 19 major ethnic groups and 597 subgroups.

Worldwide, mental disorders affect 450 million people and account for 15% of the overall burden of diseases from all causes (World Health Organization, 2001). Two-thirds of those affected do not receive adequate care owing to stigma, discrimination, neglect and poverty. The World Health Organization (2001) found that only 1% of the total health expenditure went to mental health in most countries.

Individuals with intellectual disability are thought to make up at least 1% of the population, and it is estimated that approximately one-third of them have a comorbid psychiatric disorder (Harris, 2006). These ‘dually diagnosed’ individuals present a particular diagnostic and therapeutic challenge. A difficulty facing psychiatry in the USA over the past several decades has been to interest and educate a sufficient number of psychiatrists to meet the mental health needs of this group of patients (Department of Health and Human Services, 2002).