A four-character idiom meaning domestic troubles and foreign troubles at the same time — internal unrest and external threats threatening a country or organization.
経済危機と外交問題が重なり、政府は内憂外患の状況に陥った。
With the economic crisis and diplomatic problems overlapping, the government fell into a state of internal and external troubles.
内憂外患と表現されるような時期には、国の指導力が問われる。
In times described as 'internal and external troubles', a nation's leadership is called into question.