In 1733, the War of the Polish Succession broke out and caused international relations to shift.
During Domagoj's reign piracy was a common practice, which caused bad relations with the Venice.
That was before the Starkad incident caused relations to deteriorate entirely.
Unemployment rose and wages dropped appreciably from 1873 to 1875, causing bitter relations between workers and management in many places.
But it reversed that decision shortly afterward, causing relations with Libya to deteriorate rapidly.
This caused Cuban-Soviet relations to deteriorate for years to come.
The war caused American relations with both Britain and France to deteriorate rapidly.
Bad initial planning caused "strained relations" with local law enforcement.
Portugal's steadfast refusal to cede these territories caused relations with India to decline.
By 1982, Farndon caused increasingly strained relations with his bandmates due to his drug use.