"I have no doubt that they came out here with the best of intentions ... but this is a complicated environment and before you know it, you're lost, " said Lt.

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Now, obviously, there are going to be tensions in such a complicated, difficult environment, and a -- in a situation in which on the ground, both Afghans and Americans are making enormous sacrifices.

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One problem, of course, is that within an environment as large and complicated as the financial services industry there are a lot of competing self interests.

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One worry about taking such work forward is that the insides of a cell are far more complicated and unpredictable than the controlled environment of a test tube.

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What makes this situation more complicated is that it creates an environment in which a legitimately-run foreign firm that buys an American company, and thus can raise money by issuing shares, is lumped in with companies that operate nefariously.

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Still, the mother will have to carve out some space in her work schedule and environment and that get more complicated as the child gets older, no matter what law is in place.

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Wiseman said it had to pass on the increased costs it had been facing but said "given the widely acknowledged challenges facing retailers, caused by the overall economic environment, this has proved to be a complicated and difficult process".

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Nigel Leighton, director of environment and neighbourhood services at East Riding of Yorkshire Council, said the work was "far more complicated than first envisaged".

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