A South Korean army soldier on a coast defence ship patrols off Samcheok on the east coast, about 290 km (180 miles) east of Seoul June 1, 2009. World powers are looking at ways to punish North Korea for its nuclear test last week, but may find they have few options because the state's meagre international finances have already been curtailed by sanctions. REUTERS/Stringer (SOUTH KOREA MILITARY POLITICS BUSINESS) SOUTH KOREA OUT. NO COMMERCIAL OR EDITORIAL SALES IN SOUTH KOREA. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS