The phrase "ensure the stability" is correct and can be used in written English.
You could use it in a sentence such as: "We must take measures to ensure the stability of the economy."
"I want to help ensure the stability of the program going forward.
The goal of these requirements is to ensure the stability of the banking system.
Mrs. Merkel said the most important goal was to ensure the stability of the monetary union.
A new body, the Financial Services Authority, would ensure the stability of individual banks.
Against this background, we reiterate our strong commitment to ensure the stability of the euro area as a whole.
"My first and only priority is to ensure the stability of the financial sector," Mr. Provopoulos said.
He said the closure of the bank had to be avoided to ensure the stability of the banking system and prevent 5,000 job losses.
In its place, we need a new research programme – a global endeavour with the vision of the Apollo missions – to ensure the stability of Earth's biosphere.
Mr. Putin, who says he wants to ensure the "stability and continuity" of his eight-year rule, remains hugely popular as Russian incomes rise amid high oil prices.
While greater urgency is undoubtedly needed within adoption services this will not, on its own, ensure the stability that children in care desperately need.
They argue that they need to going forward (particularly with wireless) to ensure the stability of the networks.
