It took one week for a localized event to escalate to world war.
Such an attack could escalate into a widespread conflict, although I doubt it.
Unless one can somehow imagine NATO countries going to war with each other, such as Belgium invading the United Kingdom, it is hard to see how "world wars" could escalate outside of NATO member countries.
One of the most important things you can do is to make a conscious decision not to let small situations and issues escalate to the point where they stress you out at work.
Learning and utilizing good communication skills can prevent angry outbursts caused by misunderstandings and can quickly resolve them before they escalate into anger or violence.