The only question is which retaliatory policy.
Tension could easily rise because of retaliatory actions.
A series of retaliatory actions by other countries followed.
Such retaliatory measures are often full, lethal, even reckless, does not aim to never give up.
Beyond diplomatic measures, South Korea's retaliatory options are relatively puny-and dangerous.
In one retaliatory measure last week, South Korea threatened to resume propaganda broadcasts from loudspeakers at the DMZ.
Community and church leaders appealed to all sides to remain calm and not to take retaliatory actions.
Let your children see you react to rudeness with a kind word instead of a retaliatory retort.
Once a nuclear attack occurs, the balance maintained by the parties with restraint will be broken, and the chain retaliatory attack will be out of control.
It has also said that it is considering the imposition of retaliatory tariffs on American exports of car parts and chicken meat.
We seem to be following the same path, and in a beggar-thy-neighbor world any country that does not participate in retaliatory policies will suffer.
It vowed "a just retaliatory strike operation, not only against all the interceptor means involved, but against the strongholds" of the United States, South Korea and Japan.
After a recent retaliatory Ethiopian mortar attack, a Somali living in the capital described how he helped his neighbours: "We collected the flesh of their bodies that was stuck to the walls."
By the time the colonizers granted the countries independence in the early 1960s, ethnic hostilities between Tutsi and Hutu had already led to waves of killings and retaliatory murders.
A retaliatory strike, which some hawkish South Koreans are calling for, is something the pro-business President Lee is considered reluctant to do for fear of escalating the conflict.
