beirut top iranian official lebanon saad al-hariri give conflict account tuesday key meet hold right hariri quit prime minister move attribute regional meddle iran lebanese ally hezbollah shock resignation thrust lebanon back onto front line power struggle sunni saudi arabia shi ite iran rivalry also buffet syria iraq yemen bahrain hariri fly riyadh nov. meet beirut ali akbar velayati top foreign policy adviser iranian supreme leader ayatollah ali khamenei hariri claim meet ask iran stop interfere lebanese affairs say thing velayati quote say iranian state television website tuesday meet tense violent lie say velayati say iran hop hariri would return lebanon accuse riyadh fan flame tension could tolerate strategic friendship tehran beirut hariri deny velayati account lebanese leader offer mediate iran saudi arabia prime minister hariri offer mediation countries statement press office say present velayati point view need stop iranian interventions yemen gateway precondition improvement tie iran kingdom say long-time saudi ally hariri first mention velayati meet television interview sunday night first public comment since quit warn lebanon risk gulf arab sanction regional meddle shi ite hezbollah say would return lebanon within days resignation speech broadcast saudi arabia nov. hariri say fear assassination accuse iran along hezbollah sow strife arab world top lebanese government officials senior politicians close hariri believe saudi arabia coerce quit hold since though hariri riyadh deny iran lebanon 's hariri differ key meet