I have worked in the following 61 countries:
Europe
Albania, Armenia, Austria, Azerbaijan, Belgium, Bosnia-Herzegovina, Cyprus, Czech Republic, Denmark, Finland, France, Georgia, Germany, Hungary, Ireland, Italy, Netherlands, Norway, Poland, Russia, Serbia, Sweden, Turkey and the UK.
Africa
Cameroon, Ethiopia, Ghana, Kenya, Liberia, Malawi, Mozambique, Nigeria, Senegal, South Africa, Tanzania, Togo, Uganda, Zambia and Zimbabwe.
Asia
Bangladesh, Cambodia, China, East Timor, India, Indonesia, Malaysia, Pakistan, Philippines, Sri Lanka, Thailand and Vietnam.
Middle East
Israel, Jordan, Palestine (West Bank & Gaza Strip) and Qatar.
The Americas
Antigua, Barbados, Brazil, Canada, Trinidad & Tobago and the USA.