Does Donald Trump have a plan B?

Hello Steemit, it's my first publication and I like to start talking about the recent problems between the United States and Iran over the nuclear agreement.

On the nuclear agreement with Iran, I believe that Trump must have some plan B, since the international reactions and especially of Iran may not be favorable. We already see what happens with Israel and Iran, where the tension increases and the decision of the United States only warms the environment.
I think Trump somehow does well to leave the agreement but must have a plan B. Unfortunately, Iran must have more control by the allied countries over their uranium resources, another thing that makes me weird is the interest of Tehran in keeping the agreement afloat, is not it strange? What do you think about that? My theory is that Iran wants to maintain the agreement to keep the countries distracted while on the other hand it is building weapons, they are only hypotheses.