I'm coming in on the last page and won't review to see if what I am going to say has already been said but to the question "why won't Trump say how he knows", it's called revealing sources and methods of intelligence gathering and it is not only against the law but detrimental to our national security interests.
There are things that the American public by law and national security interests, they they may not know. This should of course in our society be limited but it is necessary some times. Just imagine if this information came from an individual with knowledge. Would we print that name and possibly cause the death of that person which the US government already believes has happened to many in China for trying to report this story. It could also have come from internal communications that the Chinese are not aware of and we don't want to make them aware of.
Many good reasons why we can't be told how we got the information but as with most intelligence, it will be left up to the individual to believe or not to believe.
And here is a good example of believe or not believe what you are being told. There is an intelligence group called "Five Eyes". CNN and other left leaning media are saying that this report says that the virus did not come from the laboratory in Wuhan, with other media saying "the report" says it did. So how are we to know unless we can read what I'm guessing is a classified report that we will never see in print and will have to depend on the people reporting what it says for various political reasons it would appear.
https://www.cnn.com/2020/05/04/polit...nce/index.html
Intelligence shared among Five Eyes nations indicates it is "highly unlikely" that the coronavirus outbreak was spread as a result of an accident in a laboratory but rather originated in a Chinese market, according to two Western officials who cited an intelligence assessment that appears to contradict claims by President Donald Trump and Secretary of State Mike Pompeo.
"We think it's highly unlikely it was an accident," a Western diplomatic official with knowledge of the intelligence said. "It is highly likely it was naturally occurring and that the human infection was from natural human and animal interaction." The countries in the Five Eyes intelligence-sharing coalition are coalescing around this assessment, the official said, and a second official, from a Five Eyes country, concurred with it. The US has yet to make a formal assessment public.
The Five Eyes alliance is made up of the United States, United Kingdom, Canada, Australia and New Zealand -- and the countries share a broad range of intelligence in one of the world's tightest multilateral arrangements.
The assessment from members of the exclusive intelligence-sharing group seems to undermine forceful claims by Trump and Pompeo in recent days, as they have doubled down on the assertion that the outbreak originated from a laboratory in Wuhan, China, rather than a market in the same region.
It will likely increase pressure on the Trump administration to provide evidence to back up its claim, which it has failed to do so far despite the increasingly aggressive rhetoric from the President and his top diplomat.
A third source, also from a Five Eyes nation, told CNN that the level of certainty being expressed by Pompeo and Trump is way out in front of where the current Five Eyes assessment is. This source acknowledged that there is still a possibility that the virus originated from a laboratory, but cautioned there is nothing to make that a legitimate theory yet.
The source added that "clearly the market is where it exploded from," but how the virus got to the market remains unclear.
But without greater cooperation and transparency from the Chinese it's impossible to say with total certainty, the first official added.
https://www.dailymail.co.uk/news/art...-outbreak.html
The smoking gun file claims to have found evidence the virus spawned in the Wuhan Institute of Virology, close to the wet market China says it came from, and unearths 'risky' research on bat-related diseases stretching back years.
https://nypost.com/2020/05/02/intelligence-report-says-china-lied-about-origin-of-coronavirus/
A damning dossier leaked from the “Five Eyes” intelligence alliance claims that China lied to the world about human-to-human transmission of the coronavirus, made whistleblowers disappear and refused to hand over virus samples so the West could make a vaccine.
The bombshell 15-page research document also indicated that some of the five intelligence agencies believe that the virus may have been leaked from the Wuhan Institute of Virology, a claim initially dismissed as a conspiracy theory because Chinese officials insisted the virus came from the local wet markets, according to the Australian Daily Telegraph.
I do find it interesting that neither the New York Times or Washington Post have commented online about this story. Here's the GOOGLE search.
https://www.google.com/search?q=Five...w=1635&bih=897
Here is an interview with the reporter that broke the story in the Australian Daily Telegraph. She says that the report does not reach a conclusion but that it is "likely" that it did while others are saying ( reading from the same report I take it, that it is unlikely that it did. Somebody isn't telling the truth.
https://video.foxnews.com/v/61541908...#sp=show-clips
So who to believe?
What I do find interesting about the CNN piece, is that they speak only of the origins of the virus and if you watched the above piece, you'll see that the report ( according to this reporter ) talked about many other aspects of the report about the multiple failures of the Chinese Communist government to tell the truth from the beginning like hiding the fact that human to human contact was indeed likely.
Some will say CNN did this willfully and has resisted blaming China for all their deception. Is it because CNN doesn't believe China is to blame for these things or is it simply because they will take an opposite approach to what ever the Trump administration says? I think you know what I think since it came right out of the mouth of the head of CNN Jeff Zucker who told his staff in a secretly recorded directive to hit Trump and his administration hard 24/7/ 365. In other words, don't let a crisis go to waste no matter what the truth may be. CNN repeatedly took the opposite side of reporting this story which can easily be proven with a timeline.