The hallmark today of long-lasting wars in regions that are strategically important or are rich in natural resources is:​

A) ​foreign military intervention
B) ​development of cultural pluralism
C) ​increasing internalized sanctions
D) rapidly expanding genocide

Foreign military intervention has become the hallmark of long-lasting wars in regions that are strategically important or are rich in natural resources. This intervention often prolongs the conflict and makes it difficult to find a lasting solution. Examples of such conflicts include the ongoing war in Syria and the conflict in the Democratic Republic of Congo, both of which involve foreign military intervention. The involvement of external actors often exacerbates existing tensions and can lead to the fragmentation of societies, making it even harder to achieve peace and stability.