Sentence examples for back up his assertion from inspiring English sources

I hope he will either provide the necessary evidence to back up his assertion or apologise gracefully.

Mr. Espinosa wrote later that an opposition activist claimed that Syria was using "Iranian drones," but had offered no evidence to back up his assertion.

He offered no details to back up his assertion in a speech here before James Madison Institute, a conservative research group.

He did not give details on Wednesday to back up his assertion that the aid agency was conspiring against him, but he said it manipulated the leaders of social movements in areas where it worked.

But when asked today for the evidence to back up his assertion, a senior administration official said simply "we'll deal with Al Qaeda and Iraq in the next few days".

He cites bits of chatter he's heard on television or the radio — or overheard in a bar — to back up his assertion that "lack of the most basic knowledge is so extreme in the United States that one has to wonder if we are talking about ignorance or just outright stupidity".

He has statistics and facts to back up his assertions.

With those facts set straight, Beck looks to history to back up his assertions.

filing to include the memo from Mr. Mason and provide additional data to back up his assertions.

McNamee has said he had no direct proof to back up his assertions that he injected Clemens with banned substances.

administrators were worried that his continued presence would jeopardize plans to open a campus in Shanghai, although he did not offer any evidence to back up his assertions.