11.  North Korea rejects a South Korean demand to release a southern tourist Tuesday, endangering a major tourism project between the rival Korean states.

12.  The five-day, four-night tour to Diamond Mountain marks the first big joint venture between the two rival Korean states.

13.  The report comes a day after military boats from North and South Korea exchanged fire in the Yellow sea, drastically escalating tensions between the two rival states.

14.  The report came a day after gunboats from North and South Korea exchanged fire in the Yellow Sea, escalating tensions between the rival states.

15.  The state is also currently changing its fiscal incentive laws to compete effectively with rival states for industrial investments.

16.  The state is also changing its fiscal incentive laws to compete effectively with rival states.

17.  Those credentials could help encourage a reduction in mutual hostility between the rival states.

18.  The rival eastern states of New South Wales and Victoria are meantime trying to outdo each other in their rush to welcome the team home.

19.  The unprecedented case highlights how Cold War tactics are still being used on the Korean peninsula despite attempts by the rival states to improve relations, analysts said.

20.  Under Taiwanese law, passenger ships and vessels offering liner services are banned from sailing between the rival states, even through third countries.