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defensive operations stresses
Gruzovik, mil.	оборонительные действия
defensive operation
forens.	предупредительные меры (при борьбе со стихией (для предотвращения распространения) Alex Lilo)
Gruzovik, mil.	оборонительная операция
mil.	оборонительные боевые действия (Киселев); действия по защите; оборона (Киселев)
English thesaurus
defensive operation
mil., logist.	Type of operation aimed at annihilating or defeating an enemy action, at winning time, at saving forces or at developing conditions for a stabilization operation, through the helping, if need be, of the development of an offensive action. A defensive operation must enable the land forces to regain the initiative when it was not sufficient to win the decision stabilization or stopping of the operations. (FRA)

defensive operations: 13 phrases in 3 subjects

Banking	1
Military	11
Security systems	1