Iran's President Mahmoud Ahmadinejad has reached in the Lebanese capital, Beirut, for a two-day official visit which is his first visit to the country since his election in 2005. President Ahmadinejad is scheduled to meet President Michel Sleiman, Prime Minister Saad Hariri and Parliament Speaker Nabih Berri. He is also likely to meet Hezbollah Chief Hassan Nasrallah. The United States and Israel, which have sought to isolate Iran over its nuclear programme, have expressed concern over the visit as it is taking place at a sensitive time in politically turbulent Lebanon. Hezbollah is seeking to reject UN-backed tribunal which is likely to indict members of the group over the 2005 assassination of Hariri's father, ex-premier Rafiq Hariri.