_#_Land boundaries: 5,492 km total; Afghanistan 936 km, Iraq 1,458 km, Pakistan 909 km, Turkey 499 km, USSR 1,690 km
_#_Coastline: 3,180 km
_#_Maritime claims:
Continental shelf: not specific;
Exclusive fishing zone: 50 nm in the Sea of Oman; continental shelf limit, continental shelf boundaries, or median lines in the Persian Gulf;
Territorial sea: 12 nm
_#_Disputes: Iran and Iraq restored diplomatic relations on 14 October 1990 following the end of the war that began on 22 September 1980; progress had been made on the major issues of contention—troop withdrawal, prisoner-of-war exchanges, demarcation of the border, freedom of navigation, and sovereignty over the the Shatt al Arab waterway—but written agreements had yet to be drawn up when frictions reemerged in March 1991 in the wake of Shia and Kurdish revolts in Iraq that Baghdad accused Tehran of supporting; Kurdish question among Iran, Iraq, Syria, Turkey, and the USSR; occupies three islands in the Persian Gulf claimed by UAE (Jazireh-ye Abu Musa or Abu Musa, Jazireh-ye Tonb-e Bozorg or Greater Tunb, and Jazireh-ye Tonb-e Kuchek or Lesser Tunb); periodic disputes with Afghanistan over Helmand water rights; Boluch question with Afghanistan and Pakistan
_#_Climate: mostly arid or semiarid, subtropical along Caspian coast
_#_Terrain: rugged, mountainous rim; high, central basin with deserts, mountains; small, discontinuous plains along both coasts
_#_Natural resources: petroleum, natural gas, coal, chromium, copper, iron ore, lead, manganese, zinc, sulfur