One important note: it takes work to start a group, and once a group has started, it takes work to help keep it going.

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He also called for a commitment from allies to start closing the gaps once their economies start to recover, and also for them to work more closely together.

WSJ: For Europe's Defense Establishment, a Moment of Truth on Defense

Once we turn that corner, the energy-environment trade-off will start to work to our advantage, and possibly to the advantage of the whole world if we can develop low- or no-carbon energy technologies that can compete with cheap fossil fuels.

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The idea is to work out the kinks of development and manufacturing at once so production can start as soon as the technology is perfected.

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