11.   But implementation has broken down because North Korea is refusing South Korean replacement reactors.

12.   But subsequent talks on working out the details of the nuclear deal have reportedly bogged down, with North Korea refusing to accept a South Korean replacement reactor.

13.   But North Korea has staunchly refused a South Korean model for the replacement reactors, causing a snag in implementing the agreement.

14.   In October, an accord was reached under which the North agreed to accept replacement reactors and other benefits in exchange for ending its nuclear program.

15.   In return, North Korea is to receive two replacement reactors and other economic and diplomatic benefits.

16.   In return, the United States agreed to provide replacement reactors and fuel as well as improved economic and diplomatic ties.

17.   In exchange, the United States is to supply replacement reactors and fuel as well as improve political and trade ties.

18.   In return, North Korea is to get two replacement reactors and other economic and diplomatic benefits.

19.   In return, Washington promised to provide it with replacement reactors that produce far less weapons-grade plutonium, and to improve diplomatic ties and economic aid.

20.   Kim Young-sam said he and President Clinton have agreed that the replacement reactors should be South Korean.