He said this at a joint press conference with Polish Prime Minister Ewa Kopacz in Kyiv on Monday, Censor.NET reports citing Interfax-Ukraine.
"I just spoke with the secretary of the National Security and Defense Council. The Ukrainian military intelligence confirms the deployment of manpower and equipment from Russia to Ukraine," Yatseniuk said.
According to him, the equipment can only belong to official Russia. "Tanks, howitzers, Grad, Smerch, Buk. Radioelectronic warfare stations are not sold at Donetsk markets and in Russian military shops either. Only the Russian Defense Ministry and GRU have them," Yatseniuk added.