U.S. special envoy Amos Hochstein arrived Monday in Beirut, amid a fragile Lebanon-Israel truce, which took effect on November 27.
Israeli Defense Minister Israel Katz had warned on Sunday that "there will be no agreement" if Hezbollah did not withdraw "beyond the Litani river", while Hezbollah new leader Sheikh Naim Qassem warned the group's patience with Israeli violations could run out before the end of the ceasefire's 60-day implementation timeframe.