there are many sources apart from 'infowars' which strongly link the FBI with foreknowledge of the 1993 World Trade Centre attack. The FBI is engaged in so many fake terrorist plots entrapping weak individuals that their left hand often doesn't know what their hand is doing. And the number of times they blatantly ignored multiple warnings from allies, other foreign governments, and their own agents about 911 is criminally negligent. You think they are acting on their own? George W.(Wingnut) Bush pressured 911 investigators to slow down and give as little prominence to their investigation as possible. That's a fact. Why would the US government not want the fullest investigation of 911 the biggest murder site in US history (apart from the murder of >20 million native American indians of course) to be vigorously examined? They allocated less than $1 million initially to the 911 investigation - it ended up about $12 million. They were happy to spend $64 miilion investigating Clinton's blow jobs - that must tell you something. The 'forensic' investigation of 911 by structural engineers was conducted on a part time voluntary basis, and even then they were refused access to the site - by the FBI and other law enforcement authorities. So much (non-infowars) material on this you can find out for yourself.....
as for the 1993 bombing - here's Dan Rather CBS reporting FBI links with that atrocity. CBS and Rather are about as conservative as you can get.....