Potential oil output deal prompts another worry: a shortage

By Ron Bousso ISTANBUL (Reuters) - While OPEC and other big crude producers work towards a deal to cap production to erode a glut, industry executives are concerned the sharp drop in investment that followed the oil price crash could lead to another crisis - a supply shortage. Over $1 trillion (£0.82 trillion) worth of oil projects have been cancelled or delayed, Saudi Energy Minister Khalid al-Falih said on Monday at the World Energy Congress in Istanbul, after companies slashed budgets d