"high level assurance" is a correct and usable phrase in written English.
You can use it when you want to indicate a strong sense of trust or confidence in something. For example, "I have high level assurance that this plan will work."
Minutes later, the White House issued a statement explicitly committing the United States to continuing to provide a "nuclear umbrella" of protection over South Korea, a high-level assurance that Seoul had vigorously sought in place of what had long been an implicit understanding.
"If we have the kind of cooperation the Security Council has requested, we can get a high level of assurance," he said.
Before we discard that strategy we should have a high level of assurance that its successor would be at least as good, if not better.
The goals are a high level of assurance that Iran will not divert nuclear material for military purposes and that it will take its place in its region as a constructive power.
The international community will not be satisfied when questions remain open with regard to Iraq's weapons of mass destruction; the world is asking for a high level of assurance that Iraq is completely free from all such weapons, and is already impatient to receive it.
For example, in the government's summary, Mr. Fastow is described as saying that Merrill invested in the barge deal only because of "the extraordinarily high level of assurance" he provided that the firm would be taken out of the deal in six months, and achieve the return on its $7 million investment that it wanted.
Catering to the probabilistic decoding nature of rateless codes, outage probability constraints are applied to guarantee that the video quality layers are received with a high level of assurance.
The current study provides important insights into the design of a reliable water quality monitoring network with a high level of assurance under certain changes in non-point sources.
This paper studied the general and specific requirements of OSCS in AAQ research and introduced a system with new methodology and technology for high level quality assurance and quality control (QAQC).
No other product on the market offers such a high level of assurance of sanitation compliance.
We believe that our approach provided a high level of assurance as to the completeness and accuracy of the data.
