Because two cultures are so different they cannot assimiliate. or they are ethnocentric and will not.
"Global culture", meaning a culture interconnected worldwide? "A culture of conflict", meaning a culture that is in conflict with itself? I think the statement makes sense, as human nature has always been in conflict with itself, which leads to tension and confusion in all areas of human culture (apparently).
Primary culture conflict theory emphasizes conflicts between different cultures, often due to differing values, beliefs, and practices. Secondary culture conflict theory focuses on conflicts within a single culture that arise due to internal divisions, such as generational, socioeconomic, or ideological differences.
Beagle conflict happened in 1978.
Darklight Conflict happened in 1997.
The P'Radikus Conflict happened in 1990.
Assam conflict happened in 1979.
Cosmic Conflict happened in 1978.
World in Conflict happened in 2007.
Casamance conflict happened in 1982.
Bicholim conflict happened in 1640.
Papua conflict happened in 1963.
Drumcree conflict happened in 1999.