make common cause with
US /meɪk ˌkɑː.mən ˈkɑːz wɪθ/
UK /meɪk ˌkɑː.mən ˈkɑːz wɪθ/

1.
fazer causa comum com, aliar-se a
to join with someone else in order to achieve a shared aim
:
•
The two rival factions decided to make common cause with each other against the invading army.
As duas facções rivais decidiram fazer causa comum com uma à outra contra o exército invasor.
•
Environmental groups often make common cause with local communities to protect natural habitats.
Grupos ambientais frequentemente fazem causa comum com comunidades locais para proteger habitats naturais.