"The General Staff of Ukraine's Armed Forces on Jan. 14 said the transfer of some personnel is "a necessary step" to strengthen defense by reinforcing combat brigades with soldiers from other branches of the Armed Forces.But it stressed that Syrskyi prohibited the transfer of high-tech specialists and those trained abroad on foreign models of weapons and equipment."I have an order prohibiting the transfer of highly qualified personnel who have undergone training and specialize in aircraft maintenance," Syrskyi reiterated in an interview with journalist Andriy Tsaplienko."Clearly, these are specialists on whom money has been spent, who have gained experience, and who are practically irreplaceable," he added.But in a separate interview with Ukrainian news outlet TSN on Jan. 19, Syrskyi  acknowledged that current mobilization efforts are not sufficient on their own to meet the needs of the armed forces.Fighting has intensified in Eastern Ukraine as Ukraine and Russia try to gain the upper hand in potential upcoming peace negotiations as U.S.