1.   Besides providing the replacement reactors, South Korea is underwriting the pact.

2.   In return, Washington agreed to provide fuel oil while Japan and South Korea agreed to provide replacement reactors.

3.   The loan approval appears to be a significant concession to Ukraine on how to finance the completion of the replacement reactors.

4.   The original plan called only for working out the details of the replacement reactor by April, and another negotiating session is set for next month.

5.   The West pledged huge sums to finish two replacement reactors and safeguard the lethally radioactive wreckage of the Unit Three reactor, where the Chernobyl disaster occurred.

6.   And they said the United States was not reconsidering its insistence that South Korea be the source for replacement reactors -- a demand Pyongyang has been rejecting for months.

7.   But almost six months after the deal was outlined, North Korea is refusing to accept the replacement reactors designated by the U.S. side.

8.   But efforts to implement the deal are at an impasse because North Korea refuses to accept replacement reactors from its southern rival.

9.   But efforts to implement the deal have deadlocked after North Korea refused to accept replacement reactors from its southern rival.

10.   But implementation has broken down because North Korea is refusing South Korean replacement reactors designated by the U.S. side.