The defense contractor recently received some good news that could make it a smart buy today.Geopolitical tensions have been on the rise in recent years, especially with the conflicts in Ukraine and the Middle East. One might expect that defense contractors have delivered outsize returns, but that just hasn't been the case.Take Lockheed Martin (LMT -0.52%), for example. From the start of 2023 until just a few weeks ago, the stock hadn't gained any ground for investors. The company has faced challenges, incl ...