WTO arbiter to rule on Korea's request to retaliate in pipe dispute with U.S.

A World Trade Organization arbiter will decide whether -- and how much -- South Korea can retaliate against the U.S. in a dispute over the latter’s antidumping duties on pipes used for oil and gas production. South Korea, which instigated the dispute in late 2014, claims the U.S. has failed to comply with the panel ruling, which faulted the U.S. Commerce Department for improper calculations in its determination. Seoul is asking for the WTO the authorize $350 million in suspended...