There has been much discussion about the relocation of B-2 bombers to Diego Garcia in anticipation of a potential conflict with Iran… However, the B-2 excels primarily against small, unsophisticated, and impoverished nations equipped with outdated air defense systems. …In short, the B-2 is a sophisticated tool for intimidating weaker adversaries but is largely ineffective against modern Integrated Air Defense Systems (IADS). Mike Mihajlovic @MihajlovicMike

Recent reports and satellite imagery indicate a significant buildup of US military assets at Diego Garcia, a strategic base in the Indian Ocean. The Pentagon has deployed seven B-2 Spirit stealth bombers (capable of carrying nuclear payloads) numerous C-17 transport planes, ten KC-135 refueling tankers, an Ohio-class ballistic missile submarine, and two carrier groups to locations where they can be used in a preemptive attack on Iran. The unprecedented buildup coincides with recent threats by President Donald Trump regarding Iran's nuclear enrichment program. On Friday, Trump delivered another ominous warning to Iran during a briefing at the White House. He said:  

Iran is very high on my list of things to watch. … We will have to talk it out or very bad things are going to happen to Iran…. My big preference is that we work it out with Iran, but if we don't work it out, bad, bad things are going to happen to Iran.