SEOUL, March 20 - South Korean authorities said on Friday that Iranian attacks on Qatar's energy facilities raise uncertainty, but downplayed concerns about disruption to its liquefied natural gas (LNG) supply, citing the availability of alternative sources.

State-owned QatarEnergy said it will have to declare force majeure on long-term contracts for up to five years for LNG supplies bound for Italy, Belgium, South Korea, and China after the Iranian attacks knocked out 17% of LNG export capacity.