Roiling oil: Price volatility rises on geopolitical shifts
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Volatility is the word of the moment on oil markets. Kate Moody asks Christopher Haines, oil analyst at Energy Aspects in London, what to expect after crude prices hit a six-month high in April. Plus, Bryan Quinn takes a look at the state of America's arms industry. And we take a journey to the Italian Alps, where a tiny regional train line is making money.