A. Surrendered , or captured, combatants cannot be incarcerated in razor wire cages; this ·war' has a dubious legality.
B. How can then one characterize a conflict to be waged against a phenomenon as war?
C. The phrase ·war against terror ', which has passed into the common lexicon, is a huge misnomer.
D. Besides, war has a juridical meaning in international law, which has codified the laws of war, imbuing them with a humanitarian content.
E. Terror is a phenomenon , not an entity- either State or non-State

The passage details why the phrase "war against terror" is a misnomer.

We first look at an introductory sentence, then form pairs.

Sentence C describes the war against terror as a misnomer and sets the context of the passage. Hence, it is the introductory sentence.

Sentence E describes terror as a phenomenon, and Sentence B questions how something can be waged against a phenomenon. Therefore, E&B is a pair.

Sentence D begins with besides and assigns a juridical meaning to war, whereas sentence A mentions legality, hence forming a follow-up pair.

The correct sequence is CEBDA, and therefore, option E is correct.