Four years after Lebanon’s historic meltdown began, the small nation is still facing “enormous economic challenges,” with a collapsed banking sector, eroding public services, deteriorating infrastructure and worsening poverty, the International Monetary Fund warned Friday. In a statement issued at the end of a four-day visit by an IMF delegation to the crisis-hit country, the international agency welcomed recent policy decisions by Lebanon's central bank to stop lending to the state and end the work in an exchange platform known as Sayrafa. The IMF said that despite the move, a permanent solution requires comprehensive policy decisions from the parliament and the government to contain the external and fiscal deficits and start restructuring the banking sector and major state-owned companies.