The phrase "a key bulwark" is correct and usable in written English.
It can be used to describe something that serves as a strong defense or protection against challenges or threats.
Example: "Education is often seen as a key bulwark against poverty and inequality in society."
Alternatives: "a crucial safeguard" or "an essential defense".
While Iran's behaviour remains unpredictable, it is argued, the Saudis are a key bulwark.
The optimism is based on a belief that markets have priced in far too much negativity in the first half.And German industrial output, thus far a key bulwark against European economic slowdown, flagged in May, suffering its largest fall in over ten years.
And finally, to assert that highly autonomous cities are a key bulwark in cultivating democracy, security, identity and happiness for their inhabitants.
The key bulwark of faith-based Trumpism is the prosperity gospel — a movement rooted in Pentecostal preaching that holds that God directly dispenses divine favor in the capitalist marketplace to his steadfast believers.
News that the company is encouraging people to design for all devices at once is really an encouragement to get lazy around design, and will ultimately undermine one of Apple's key bulwarks against competition from Microsoft and Google.
Trump isn't one for optimistic talk about reconstruction and civil society, but lawmakers and experts have warned for years that those are key bulwarks against extremism in the region.
The assassination of Khashoggi, a prominent critic of Mohammed's policies, has sparked a foreign policy crisis for the White House and raised questions about the administration's reliance on Saudi Arabia as a key ally in the Middle East and bulwark against Iran.
This is a major blow, since Heinemann is widely acknowledged to be not only a key person at Rocket but also someone who acts as a bulwark between staff and the famously irascible Oliver Samwer, a man who is quite happy to walk out of pre-arranged interviews.
The statement by the US ambassador, Dennis Shea, threatened to erode a key element of trade enforcement at the 23-year-old WTO: binding dispute settlement, which is widely seen as a major bulwark against protectionism.
"He is a stubborn character, and a bulwark of sorts," Mr. Polner said of Mr. Carey.
Many Mexicans see Pemex itself as a national good and a bulwark against shady outsiders.
