Russia ‘pursuing strategy of terror’, EU’s von der Leyen says after deadly strikes on Ukraine – Europe live

Ukraine president confirms series of attacks on Pryluky, Dnipro, Kremenchik, Zaporizhzhia and Kyiv

We are getting reports of a knife attack at a vocational school in Ostroka, Poland, which left at least seven people injured, including two seriously, as reported by Poland's RMF FM radio.

The city mayor, Pawe Niewiadomski, confirmed in a statement that the situation has been contained.

Henri Kagan discovered a new way of manipulating chemical reactions, allowing a greater excess of one of the mirror images to be created than was previously assumed possible. His discovery has been revolutionary for chemists who develop reactions for the manufacture of pharmaceuticals, flavours, scents and new materials.

Kenso Soai designed the first chemical reaction in which only one of the potential mirror images was formed. Other than life itself, no one had ever achieved this feat. The Soai reaction is one of the most spectacular chemical experiments ever conducted."