What's behind the campaign to cast doubt on the meeting?

I cast doubt then, and do so now, on this analysis.

They said the case cast doubt on reform that had already taken place.

These ancient works began to cast doubt on received Chinese history.

But the foreign minister appeared to cast doubt on that.

Apparently that is not the case, which further casts doubt on the reported results.

However, their work does cast doubt on two recent developments within the civil service.

The report could not be confirmed, and other reports cast doubt on it.

A recent report by the agency cast doubt on Iran's claims.

Today's report must cast real doubt on the degree to which that is now in prospect.