Is there any point at which defense stocks cost too much to buy? Investors don't seem to think so.By now you've heard the news: Last weekend, U.S. Special Forces units raided the Venezuelan capital of Caracas and arrested President Nicolas Maduro and his wife, taking both away for trial on narcotics and terrorism charges in New York. Oil stocks surged on the news Monday -- and so did defense stocks, with shares of Textron (TXT +3.50%) gaining 2.2%, Lockheed Martin (LMT +4.01%) 2.9%, and General Dynamics clo ...

It's a dangerous world, and this is driving up defense stock prices. For new investors looking to buy, this is not a good thing.It's not always fun being right -- especially when you write about defense stocks, and you have to tell people that defense stocks are too expensive to invest in right now.After reviewing the skyrocketing prices of large defense aerospace and contractors last year, I concluded that defense stocks cost too much. Checking back on valuations after prices had fallen in January, I had t ...