"Tomorrow, I will sign a decree on the next wave of mobilization. I am certain that the Ukrainian people will support this decision and the mobilization will be carried out successfully," Poroshenko said.
According to the Ukrainian Defense Ministry, the mobilization is expected to begin on January 20, and will be held in three stages. Ukraine plans to bolster its military by calling up some 50,000 people during the new wave of mobilization.
In 2014 several waves of mobilization were conducted in Ukraine, with a focus on reservists. Officers under 45 and soldiers under 40 were called up.
A military operation in Ukraine's southeastern regions of Luhansk and Donetsk has been conducted by Kiev authorities since April. Residents of the regions established so-called people's republics and declared their independence following a February coup in Kiev.