President Vladimir Putin has personally taken part in major military drills of Russian nuclear forces, directing the launch of four nuclear-capable ballistic missiles as part of the exercises, the Kremlin said Friday. The test launches, conducted on Thursday, involved land, air, and submarine-based ballistic missiles, Russia’s defense ministry said in a separate statement. The ministry said a Topol intercontinental ballistic missile had been test fired from the Plesetsk cosmodrome in northern Russia, hitting a target at the Kura military testing range on the Kamchatka Peninsula thousands of kilometers away. Putin spokesman Dmitry Peskov said the exercises were routine and not directly linked to any international developments. Still, the presidents direct involvement in overseeing intercontinental ballistic missile launches is an event that has been rarely reported by the Kremlin in the past. "The commander in chief conducted the launch of four intercontinental ballistic missiles," Peskov said in a conference call with reporters. Peskov wouldnt elaborate on what specific part Putin played in the war games, saying that the president took "the necessary moves in line with the standard procedure for relevant situations as the commander in chief." A nuclear submarine in the Barents Sea also launched an ICBM at the same Kura range, while another nuclear submarine in the Sea of Okhotsk fired two ICBM in the opposite direction, hitting targets at the Chizha firing range in the Arkhangelsk region in Russias northwest. As part of the maneuvers, the Tu-160, the Tu-95 and the Tu-22 bomber launched cruise missiles at mock targets at firing ranges on Kamchatka, the Komi region in the far North and in Russias ex-Soviet neighbor Kazakhstan. The maneuvers are the latest in a steady series of war games intended to strengthen the troops readiness amid tensions with the West. In September, the Zapad (West) 2017 drills held jointly by Russia and Belarus have worried some NATO members, who have criticized what they have described as a lack of transparency and questioned Moscows intentions. Russia has rejected the criticism. Defense Minister Sergei Shoigu said at a meeting with top brass Friday that the military will continue to strengthen its forces in western Russia in response to a NATO buildup in Poland and the Baltics. "The military-political situation at our western frontier remain tense and is set to exacerbate," he said.