There are two ways to deal with the kind of uncertainty the US-Iran war has brought to the stock market. First, you could just sit it out and let the situation clear up. This not only means that you stop buying, but also selling. The reason why we are talking about selling is because even the most rational minds get jittery when they see their portfolio value coming down every day and sense that “fear” is the overwhelming emotion on the street. And this fear might persist on the street for some time. There is, of course, another option.