The phrase "a backstop of" is correct and usable in written English.
It can be used to refer to a safeguard or a measure that provides support or protection in case something fails or goes wrong.
Example: "The new policy serves as a backstop of financial security for the organization during economic downturns."
Alternatives: "a safety net of" or "a fallback of".
Once the company has a backstop of $200,000 in cash, I'll start paying back debt.
"There they are," Mr. Twisselman said, training binoculars on a distant clearing where a handful of elk stood inside a backstop of interlocking hills.
Second, the euro zone's permanent rescue fund became operative last week after months of wrangling and legal challenges, providing a backstop of €500 billion, or $645 billion, for countries that risk losing access to capital markets.
Most troublesome of all were those whose difficulties infected the banks, because the banks had either lent them money or had provided them with a backstop of some kind.
New legislation authorizing a backstop of the mortgage finance companies leaves it up to the Treasury secretary to decide whether to honor preferred dividend payments or to repay subordinated bondholders before the government, an S.& P. analyst, Victoria Wagner, said.
Most estimates suggest that 5,000 to 10,000 troops will remain, allowing the United States to maintain a foothold in the volatile region and serve as a backstop of support for Afghan troops battling the Taliban insurgency.
The government is providing a backstop on all but $42 billion of Wachovia's $312 billion of risky assets.
Annuities are a basic staple of modern portfolios, the financial equivalent of a backstop to guarantee a minimum of income in retirement.
Even as the government provides a backstop to some of Citigroup's losses, it is unclear whether regulators have considered all the types of assets that may cause future losses.
One minister who was in the room suggested the prime minister gave the impression that she would ask the EU for an extension to the end of June, with the option of (you guessed it) a "backstop" option of a delay of up to two years.
The EU also says any backstop plan should not have an end date - something Mrs May has previously insisted on, leading to the possibility of a "backstop to the backstop".
