“The question behind my doctoral research is simple,” says Kunal Singh, an MIT political science graduate student in his final year of studies. “When one country learns that another country is trying to make a nuclear weapon, what options does it have to stop the other country from achieving that goal?” While the query may be straightforward, answers are anything but, especially at a moment when some nations appear increasingly tempted by the nuclear option.From the Middle East to India and Pakistan, and from the Korean peninsula to Taiwan, Singh…