What is the meaning of “reprisal” in paragraph 4

Answer:
1: a retaliatory act
2: the regaining of something (as by recapture)
3: something (such as a sum of money) given or paid in restitution —usually used in plural
4a: the act or practice in international law of resorting to force short of war in retaliation for damage or loss suffered
b: an instance of such action
Explanation: