Iran's President Mahmoud Ahmadinejad has praised Lebanon for its resistance against what he called bullying forces of the world. He told this during his address to a rally in Lebanese capital Beirut during two-day visit to the country. He also extended Tehran's unstinted support to a unified Lebanon and its government. Ahmadinejad's trip has raised concerns in Washington as White House described the visit as provocative. US want to isolate Iran over its nuclear programme and say, Iran's support for Hezbollah fighters undermines Lebanese sovereignty. Analysts say, Lebanon's government, which includes Hezbollah ministers, is deeply split over an international investigation into the killing of al-Hariri which is expected to indict Hezbollah members. Lebanese Prime Minister Saad al-Hariri is resisting pressure from Hezbollah to renounce the UN-backed probe before it issues indictments.