Speaker Nabih Berri's adviser Ali Hamdan said on Monday that Berri's visit to Tehran is "historic" as an agreement between Iran and world powers was reached.
He also noted that he will be meeting other countries' officials in order to find a solution for the Lebanese crisis.
Hamdan's comments were made during a phone call with Nharkom Said TV show in which he asserted that Speaker Berri is deploying "his utmost efforts to end the political deadlock in the country."
This comes as Speaker Nabih Berri met Iran's supreme leader Ayatollah Ali Khamenei on Monday.
Berri is also expected to hold talks with Iranian President Hasan Rouhani concerning respective countries' bilateral ties and regional developments.