How did the attacks in Syria influenced stock markets?

Futures of the US indices are traded slightly on positive territory.
Traditionally, US indices dropped in the weeks before the start of military action, due to increased uncertainty. However, since the beginning of the conflict, which usually ends relatively quickly, this uncertainty is diminishing and the stock indices increase.
Based on statistics from seven US military invasions since 1983, it is clear that the Dow Jones blue chip index declined by an average of 0.6% in the month before the start of the conflict. By comparison, in the month after the start of the military conflict, the Dow index rose by 4%.
In addition, the strong performance of the index continued for several months. The average performance of the benchmark, three months after the start of the conflict, was an increase of 6.7%, and six months later, it was trading 7.2% higher, with an average performance of 4.8% for similar periods.