They must observe rules of engagement that restrict use of their firearms and deny them air cover and artillery support in circumstances where it can mean the difference between living and dying.

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They must keep strictly to the law, observe accounting rules scrupulously and be wholly transparent.

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"Given that Melbourne's on the world stage with a lot of interstate and international visitors, we would expect drivers to observe road rules, " he said.

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For mobile devices or certain classes of SaaS applications, perhaps it will be sufficient to set some ground rules, observe activity, and test when possible that the rules are being followed.

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Contingent fees are generally OK in the case of amended tax returns too, although there are timing rules to observe.

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The Conference therefore calls upon States and all parties to armed conflicts strictly to observe international humanitarian law, as set forth in the Geneva Conventions of 1949 and other rules and principles of international law, as well as minimum standards for protection of human rights, as laid down in international conventions.

UNESCO: Vienna Declaration and Programme of Action

In light of the abysmal response, containment and cleanup we have observed and continue to observe in the aftermath of the BP disaster, it's clear that we need new rules that require real, credible blowout response plans before any new deepwater drilling is permitted.

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