(This is CNBC's "Power Insider" newsletter, your inside look at the investments, people and companies powering the global energy industry. Click here to subscribe.) Trying to predict where energy prices are heading is tough enough, but in a time of war it's even more difficult. Now, add in a war that also involves a massive slowdown in shipping in one of the most important channels in the world. It may not be an impossible task, but it's darn close. Even the smartest energy insiders on the