Russian ⇄ English

только в случае крайней необходимости stresses
gen.	only for the most compelling reasons (Service personnel should be recalled from annual leave only for the most compelling reasons. tlumach)
Игорь Миг	only in cases of extreme necessity
tech.	until absolutely necessary (translator911)

только в случае крайней необходимости: 3 phrases in 2 subjects

Medical	1
Military	2