Raul Castro and the Iranian president also held a late-night meeting Wednesday, discussing bilateral relations and world events. “We have common positions on many things,” Ahmadinejad said. “We have been, are and will be together one with the other.” Ahmadinejad took no questions about tensions between his country and Washington over Iran’s nuclear program, and did not comment on the assassination Wednesday of a nuclear scientist working at Iran’s main uranium enrichment facility.