Who is Joseph Aoun, a low-profile army chief who is now Lebanon's president?

Lebanon’s new president and former army commander Joseph Aoun has maintained a low profile. Those who know him say he is no-nonsense and averse to affiliating himself with any party or even expressing a political opinion. That's a rarity for someone in Lebanon’s fractured, transactional political system. His election on Thursday ended a more than two-year vacuum in the post. But it didn't come without criticism. Some people noted that Lebanon's constitution bars a sitting army commander from being elected president, though the ban has been waived multiple times. Others call Aoun’s election the result of outside pressure, notably from the United States and Saudi Arabia.