Oil prices continue to be volatile and hard to predict, which is why finding undervalued energy stocks can be hard, too. After rising steadily for most of March and April, crude prices just suffered their biggest weekly decline in three months as tensions in the Middle East ratchet down and global demand softens. Brent crude oil, the international standard, is currently trading at $83.78 per barrel, while West Texas Intermediate crude oil, the American benchmark, has fallen below $80 a barrel.The current de ...