The article mostly accuses Rouhani and Iran of selling out, including the Rosh Hashanah greeting to Jews by its foreign minister Zarif, noting that his greeting by definition must have also included Jews who "occupy Palestine!"
Alwash says that Iran is trying to ingratiate itself with the US and is of course using the Jews to help bring this about.
But he is most upset about the Holocaust statement, saying that Jews use the event to justify the existence of Israel, which is of course an unpardonable crime.
While Alwash does not explicitly deny the Holocaust in this article, according to his Wikipedia and Facebook page he is a "researcher" on the topic and he does consider the Holocaust to be a myth. Here is how he illustrates his latest Facebook entry:
Alwash is not a Syrian although he is a staunch defender of the Assad regime. He is a Jordanian of Palestinian origin.