Russia-Ukraine war live: Nato considering shooting down Russian missiles that approach its borders, says Polish official

Poland's deputy foreign minister Andrzej Szejna tells Polish media Russia knows there will be a counterattack' if missiles go further into its territory

The Kremlin has refused to be drawn on whether it believed there was a link between the Ukrainian leadership and Friday's Moscow concert hall attack, in which at least 139 people were killed.

Asked during a call with reporters whether there was a direct link between Ukraine and the attack, Kremlin spokesperson Dmitry Peskov said: I have nothing to add to what has already been said on this topic."