The key work variable is zero-sum vs. non-zero sum (both negative-sum and positive-sum).

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Despite their importance, financial measures should be complemented with non-financial metrics (which often indicate positive and negative trends earlier than the bottom line) to present a more complete picture of the organization.

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Joerg Kraemer, chief economist at Commerzbank -- Germany's second-largest bank -- would expect the ECB to cut the deposit rate to negative territory before putting in place any other non-standard measures such as a loan scheme for small businesses.

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For 2012, wireline operating income margin was 0.2 percent and wireline EBITDA margin (non-GAAP) was 21.3 percent, including the negative impact of fourth-quarter storm recovery.

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After factoring in inflation and, in the case of non-registered accounts, taxes, the real return is negligible to negative.

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The Secretary-General is gravely concerned about the negative impact of this deeply destabilizing act on regional stability as well as the global efforts for nuclear non-proliferation.

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