The claim about Donald Trump stating that he is keeping the Strait of Hormuz closed because opening it would enable Iran to make '$500 million a day' is only present in the context of a single web search result citing The Guardian. While other evidence confirms Trump made ultimatums regarding the Strait of Hormuz (e.g., The Guardian mentioning a 48-hour ultimatum), none of the provided evidence sources corroborate the specific figure of '$500 million a day' being attributed to him.

The claim that Donald Trump asserted the US-Israeli war on Iran is going well because it hasn't lasted as long as the Vietnam War is only suggested by the context of web search results discussing Trump's assessments of the war's duration. However, none of the provided evidence explicitly quote or confirm this specific comparison (comparing the duration to the Vietnam War). The evidence confirms Trump made assessments about the war's length and that the US-Israeli offensive is ongoing, but the specific comparison is not independently corroborated.