[HIGHLIGHTS] Estonia warns of Putin's “amoeba tactics” – Kharkiv could fall “in one fell swoop”.

The Russian army is threatening the Ukrainian city of Kharkiv. An Estonian general warns of new tactics from Putin.

The city is of great strategic importance; it is also, in a sense, Ukraine's second capital. Ukraine's president also did not rule out a major attack by Russia on KharkIV. The loss of the city would be particularly painful for Ukraine, says Volodymyr Zelensky, the president of the Ukrainian National Council of Defense. The Russian military has apparently been able to make progress in recent weeks thanks to a new tactic. And Kharkiv, in particular, now seems vulnerable. In his opinion, Russia could take Kharksiv "in one fell swoop." He describes a new strategy by Moscow in the Ukraine war as an "amoeba tactic." Small troops attack Ukrainian positions spread over a large area to find weak points in the defense.