Photo: June 25 (Reuters) - Russia is using its reserve forces in a covert mobilisation to replenish its ranks in eastern Ukraine and there is no point in simply waiting for its offensive potential to fizzle out, the head of Ukraine's military intelligence agency said on Saturday.

Major General Kyrylo Budanov, Chief of the Defense Ministry of Ukraine, told Reuters about the peculiarities of mobilization in Russia.

"Russia is replenishing its armed forces through covert mobilization, so it makes no sense to wait until its offensive potential is exhausted," said the head of Ukrainian military intelligence, noting that he believed Ukraine could win over Russia only with military force.

“The strategy is very simple. Stabilize the situation. To get the necessary amount of equipment and prepare the required amount of forces and means to launch a counteroffensive to return our entire territory," said the head of the Defence Intelligence of the Ministry of Defence of Ukraine.

"We should not expect miracles that they will get tired, stop wanting to fight and so on. We are regaining our territory due to our counteroffensive,” said Major General Kyrylo Budanov.