How to Use "bulwark" with Example Sentences

1. He was a bulwark against further blairite defections .
2. Many of them see the army as a bulwark against bearded hordes .
3. The institution that sees itself as the bulwark against worsening chaos has always been the army .
4. The bulwark against populism could buckle if there is yet another round of brinkmanship and bargaining .
5. The bloodless politics of brussels , once a bulwark against extremism , has now become an obstacle .