Here is a list of European countries that have been involved in the mentioned conflicts over the past 40 years:
1. **Russo-Ukrainian War (2014-present)**:
- Russia
- Ukraine
2. **Yugoslav Wars (1991-2001)**:
- Slovenia
- Croatia
- Bosnia and Herzegovina
- Serbia
- Montenegro
- North Macedonia
3. **NATO Campaign in Libya (2011)**:
- Various European countries participated as part of NATO, including the United Kingdom, France, Italy, Denmark, Norway, and others.
4. **War in Afghanistan (2001-2021)**:
- United Kingdom
- Germany
- France
- Italy
- Poland
- Spain
- Denmark
- Netherlands
- Many other European nations contributed troops as part of the ISAF.
5. **War in Iraq (2003-2011)**:
- United Kingdom
- Poland
- Spain
- Denmark
- Italy
- Netherlands
- Other European countries also participated in various capacities.
These countries have been involved in significant military engagements, either as direct participants or as part of broader coalitions like NATO.