I think there was a time, when the United States trusted Britain. We had reason to keep D day a secret. D day was successful.
Contrast the trust then, with the trust now. If you were Britain would you trust a United States President, who had Churchill’s bust removed from his office? Even after Britain requested that the bust be placed at a different location, like the Senate Capitol building, the request was ignored. 
 Google Dinesh D’Souza Churchill bust
Poland has had problems with interaction with the United States. There was a time when Poland viewed the United States as a model. I don’t think Poland trusts the United States like they did at one time. 
I just happen to correspond with a citizen of Norway. There has been a United States embassy spying scandal there. My own opinion is that the United States has been arrogant and condescending in their actions regarding the spying scandal. 
 Eric the Read
How about relations with Israel? Mixed messages have been sent. Netanyahu was snubbed, publicly and deliberately.
 Google Netanyahu snubbed
Finally, I can understand how a person could become disillusioned with trust in these times.
My wife has a low threshold of trust, and I don't blame her.
I have been very fortunate; I trust my wife, to whom I have been married 57 years. Many years ago, I signed a document giving her general power of attorney. She could handle any business transaction on my behalf. The document is in effect to this day, as I write this. She would have been able to sell our house, take all money from everywhere and leave.
I jokingly said that I was considering taking away her power of attorney. She was devastated.
Generally, I trust everyone until they give me a reason not to. This has caused some problems, but it has not changed my mind.
I communicate with a man in Texas. I live in Arizona. I trust the man in Texas implicitly even though I have never met him physically. My wife has doubts; not for any particular reason, it's just her nature.
In God We Trust
Someone bigger than us is in charge. He will deal with those who can't be trusted!