Aoun made the remarks during his meeting with Paul Grove, senior staff at the US Senate Appropriations Committee, according to a presidential statement.
The deal signed by Lebanese and Syrian defense ministers in Saudi Arabia came after clashes in border areas earlier this month left several people dead and dozens wounded on both sides
The ceremony at the Camille Chamoun Sports City Stadium drew delegations from 70 countries, including Iran, Xinhua news agency reported quoting Lebanese broadcaster al-Jadeed.
The Israeli PM's speech was released after an Israeli official told CNN the security cabinet had approved a ceasefire deal. Netanyahu also said the duration of a ceasefire would 'depend on what happens in Lebanon.'
The attack came as senior U.S. diplomats were in the region to push for cease-fires in Lebanon and Gaza, hoping to wind down the wars in the Middle East in the Biden administration’s final months.