1Self-defense: protecting oneself. At an individual level it refers to acts to protect body or property; in international contexts it can refer to a country's self-defense.
彼女は自己防衛のために護身術を学んだ。
She learned self-defense techniques to protect herself.
国際法では国家の自己防衛権が議論されることが多い。
In international law, a country's right to self-defense is often discussed.
過度な報復は自己防衛の範囲を超える可能性がある。
Excessive retaliation may exceed the scope of self-defense.