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The Brent oil price has fallen by more than $10 – which means 10 per cent – in less than two weeks and now stands below $ 100. The precise number matters less than the trend. Now the question is how much further prices will fall.

Saudi Arabia is the only country in the world with the ability to cut production and to keep prices up. Some feel the Saudis are using the fall to discourage investment in high-cost projects including tight oil and some deep water ventures. I am not convinced. The Saudi oil minister, Dr Al Naimi looks tired and unsuited to such a high-stakes game. I expect the Saudis to pursue the tactic of making small incremental cuts in output in the hope that the market will stabilise. I doubt if this will work. Only a cut of 1.5m to 2m b/d will suffice to maintain prices and that would squeeze Saudi revenues too much. With growing domestic demand Saudi Arabia has little room for manoeuvre. As noted last week, the Saudis seem to be in process of losing control of the oil price. Read more

A week after the EU and the IMF announced their bail out plan for Cyprus, it is now clear how little consideration was given to the knock on implications of the proposals. Even if they are never implemented, the ideas put forward might change the behaviour of those with funds in banks across southern Europe. But the proposals will have still wider implications – not least for Europe’s energy security.

The Russian reaction to the proposed bank deposit levy had been predictably furious. Surely someone in Brussels or Berlin could have foreseen what would happen? Did no-one realise that a good proportion of the Russian money in Cyprus belonged to people rather close to the Kremlin? Read more

Tel Aviv, Israel's financial centre. Getty Images

There is much talk in Davos of black swans, grey swans and white swans. But what about a kosher swan?

For the uninitiated, black swans are unexpected events that have a dramatic impact and sweep away previous certainties and plans.

Tel Aviv is a long way from Davos and not many Israeli politicians find their way up the Magic Mountain, but Shimon Peres, Israel’s president, is a very rare exception. Read more

Shale gas drilling rig near Blackpool, in north-west England . Getty Images

I spent the holidays in Wales, dodging the odd shower, and contemplating the potential if someone could invent a technology that, short of massive hydro-power schemes, could convert rainfall into power. Wales would undoubtedly be the Saudi Arabia of rain power.

But Wales may not have to wait for new technology to become an energy producer again. The country looks set to be one of the main centres in the UK for the rapidly expanding shale gas business.

One of the most significant events of 2013 for the energy sector in the UK will be the publication of the next report on shale gas prospects across the country from the British Geological Survey. Well timed leaks of part of the report, which appeared just before the chancellor’s statement in December, have already suggested a significant increase in the resource base available near Blackpool. Read more

The report in the Financial Times on Tuesday that the Chinese government is inviting international companies to directly involve themselves in its plans to develop shale gas could be of huge significance for the global energy market over the next decade and beyond.

China has huge shale deposits, perhaps double the US levels, and as yet zero production. Bold plans to produce 6.5bn cubic metres of shale gas by 2015 and 60bn by 2020 have generally been dismissed as fanciful given China’s limited technical base in shale and the challenges of infrastructure and water supply.

But never underestimate Beijing’s determination. The resistance to dependence on outside sources of supply is as strong as ever. Indigenous resources will be given priority and China is now rich enough to absorb the costs of bringing supplies from the north and west to the cities on the eastern seaboard. Read more