A Middle Eastern man tried to blow up the Federal Reserve Bank in Lower Manhattan this morning, law-enforcement sources told the Post. The terrorist parked a van filled with what he thought were explosives outside of the Liberty Street building, sources said, then tried to set them off using a cell phone detonator. The suspect, who was not immediately identified, was provided the explosives from an undercover FBI agent that he met on the Internet and believed to be an accomplice, the sources said. …