21.   Any of several major issues in the complex negotiations could stall progress.

22.   Before talks were suspended by Estrada, progress was stalled for months over a conflict between the two sides on how to implement an agreement on human rights.

23.   But control over water resources in the West Bank, a key element to any agreement, has threatened to stall progress.

24.   But the issue of control over water resources in the West Bank, a key element to any agreement, has threatened to stall progress.

25.   But the German world champion found his progress stalled momentarily as he completed his fine-tuning.

26.   De Klerk, however, said a misdirected affirmative action program could stall progress.

27.   Discord over money stalled progress Tuesday at a global poverty summit as delegates jostled over ways to raise living standards.

28.   Fresh violence stalled early progress in the peace process made by Zinni, who was told Saturday to return to Washington, Powell said.

29.   Japan and other nations have stalled progress on trade liberalization among Pacific Rim countries by refusing to open forests and fisheries to foreign competition, American delegates said Tuesday.

30.   Some wealthy Palestinians felt it would only bring harsher punishment by the Israelis, stalling any progress in talks.