tug of war

US /ˌtʌɡ əv ˈwɔːr/
UK /ˌtʌɡ əv ˈwɔːr/
"tug of war" picture
1.

a contest in which two teams pull at opposite ends of a rope until one team succeeds in pulling the other over a central line

:
The annual picnic always features a lively game of tug of war.
Our team won the tug of war by a narrow margin.
2.

a situation in which two opposing groups are trying to win or gain control of something

:
There's a constant tug of war between the marketing and sales departments.
The budget negotiations turned into a real tug of war.