The strategic joint military exercise Zapad-2017 took place from September 14-20 at several training grounds in Russia and Belarus. According to official statements, the total number of troops participating in this military drill was 13,000. However, the real figures could well have been significantly higher. The official scenario of Zapad-2017 was very close to that of previous Belarusian-Russian military exercises, which took place in 2011 and 2013. Belarusian and Russian troops were preparing to repel aggressive actions by their western neighbours, aimed at destabilising the situation in Western Belarus.