21.   Doing so will require a degree of courage and leadership that Zedillo has not always shown.

22.   Doing so will require Israeli permission.

23.   Doing so would require a public vote.

24.   Doing so would require fleeing at a speed faster than light.

25.   Doing so would require more probable cause than a simple scent.

26.   Doing so would require spending more on the planes during the next few years than the Clinton administration proposes.

27.   Doing so may require unambiguous and generous American support for a regime that finds itself under assault.

28.   Doing this requires processing speeds of a hundred million calculations per second, or more.

29.   Relief groups are also hostages, he said, because to do anything requires working through the former leaders.

30.   Still, the market in developing nations is young, and doing business requires a massive effort involving education, networking and financing.