claimed that he predicted Osama bin Laden’s attacks a year before 9/11?

Trump has made the claim multiple times, such during his campaign on the Alex Jones Radio Show, on Twitter, and after the raid on ISIS leader al-Baghdadi when he claimed that the event was more important than the death of bin Laden. Trump did in fact mention Osama bin Laden in his 2000 book The America We Deserve in the context of how the Clinton administration was mishandling multiple threats, referencing a 1998 air strike on bin Laden’s compound. While Trump originally asserted that no one had heard of bin Laden, he was a well-known and reported on threat at the time, which owed to the reasoning behind the airstrikes in the first place. Trump’s book also did warn of a large terror attack, although this was already the driving force of concern about bin Laden and other possible sources of terrorism.

Business Insider – Trump claims the killing of ISIS leader al-Baghdadi is more significant than Osama bin Laden’s assassination.
FactCheck.org – Trump’s bin Laden ‘Prediction’