Even if Russia decided to establish a buffer zone across Ukrainian territories, Moscow does not need to announce another wave of mobilization to strengthen its army ranks, according to Russian Defense Minister Sergei Shoigu.

This question was raised after Russian President Vladimir Putin suggested that Moscow might have to establish "a cordon sanitaire" in Ukraine to ensure the safety of Russian civilians amid Kievan threats.

On Tuesday, Shoigu dismissed the claims of a possible new mobilization as "complete stupidity" and that Moscow has enough troops to fulfill its goals and there is no need for any further mobilization.

West exploits all for its benefit, Russia to act accordingly: Putin

On the 25th anniversary of the Yugoslavia bombing, perpetrated in 1999 by NATO forces at the time, Russian President Vladimir Putin slammed the West's foreign policy and actions, referencing precedents that still hold truths today. 

Addressing the war and bombing of Yugoslavia, Putin coined it a "great tragedy" and recalled the details of the attack. 

In 1999, the armed conflict between the separatist Albanian Kosovo Liberation Army and the Serbian army and forces triggered a series of NATO bombings in Serbia that lasted from March 24, till June 10. 

Serbian authorities revealed that 2,500 people, including 89 children, were killed, while 12,500 others were injured. Moreover, due to the use of depleted uranium bombs, cancer rates continue to spike among Serbians, President Aleksandar Vucic revealed. 

Putin placed all responsibility on the West, which dropped bombs on Serbia without any resolution at the UN Security Council, and launched a military operation tantamount to war in the center of Europe. 

Read more: Ukrainian army struggling with manpower shortage: WSJ