21.   Cohen thwarted the effort, but it caused enough of a stir that Morris had to broker a truce, several company executives said.

22.   Communications difficulties thwarted efforts Wednesday to complete remote tests of an experimental, Japanese-built robot arm aboard the space shuttle Discovery.

23.   Earlier efforts were thwarted by violence, for which the Palestinian leader, Yasser Arafat, bears primary responsibility.

24.   Even parents who exercise the utmost discretion find their efforts thwarted repeatedly during so-called family movies, during off-the-wall TV teasers and whatever visual cues await at the supermarket.

25.   For years, states have negotiated unsuccessfully to make the treaty more rigorous, the efforts thwarted mainly by disputes over how to police modern biology and medicine.

26.   Has the violence in the Middle East thwarted your efforts?

27.   Here, secularism and the Islamic revival coexist, though Islamic leaders frequently complain that their efforts are thwarted by President Emomali Rakhmonov.

28.   If Sindy steps onto U.S. turf, she face a tough challenge from Barbie, who in the past thwarted similar efforts by Mattel competitors.

29.   If the Republican leadership thwarts that effort, too, she said she had at least a dozen Republican supporters who would help stall the legislation in the House.

30.   If Sindy does step onto U.S. turf, she faces a tough challenge from Barbie, who in the past thwarted similar efforts by Mattel competitors.