1.   But subsequent talks broke down Thursday, as North Korea refuses to receive reactors from its southern capitalist rival.

2.   North Korea refuses to receive reactors from its southern capitalist rival.

3.   The deal has hit a snag as North Korea refuses to receive those reactors from its southern capitalist rival.

4.   The North, apparently out of national pride, had refused to receive reactors from its southern capitalist rival.

5.   The North, apparently out of national pride, had refused to receive those reactors from its southern capitalist rival.

6.   In exchange, it would receive modern reactors and improved political and economic benefits.

7.   In exchange, it would receive modern reactors and improved political economic benefits.

8.   The United States stressed Monday that any reactor North Korea receives in exchange for scrapping a nuclear arms program must come from its rival South Korea.