Modern warfare concern, in brief Crossword Clue

 The answer to the crossword clue "Modern warfare concern, in brief" is WMDs. WMDs stands for Weapons of Mass Destruction, which are weapons that can cause widespread death and destruction. They include nuclear, chemical, and biological weapons.

Here are some other words that could be used for the crossword clue "Modern warfare concern, in brief":

Nuclear weapons

Chemical weapons

Biological weapons

Mass destruction weapons

Weapons of terror

I hope this helps! Let me know if you have any other questions.