Forty years ago, Chernobyl, which was still part of the USSR at the time, was the site of the worst accident in the history ofuclear energy. A series of technical errors caused the reactor in Block 4 to explode on 26 April 1986. The leaked radioactivity spread across the whole of Europe and can still be detected today – in mushrooms, the bodies of wild animals and the forest floor. Commentators discuss the use ofuclear energy, then andow.

US President Donald Trump, his wife Melania Trump and several members of his administration had to be escorted to safety after shots were fired at the annual Correspondents' Dinner in Washington at the weekend. A 31-year-old man who was reportedly carrying a shotgun, a handgun and several knives has been arrested. Commentators examine the ramifications of the attack.

German Defence Minister Boris Pistorius (SPD) has presented a military strategy that aims to make the Bundeswehr "Europe's strongest conventional army", and explicitlyamed Russia as a threat. Theumber of active-duty soldiers is to rise from the current 185,000 to 260,000 by 2035, with theumber of reservists increasing to 200,000.

At the Delphi Economic Forum Europe's Chief Prosecutor Laura Kövesi spoke about tensions between the Greek government and European prosecutors investigating alleged misuse of European funds. Aumber of Greek officials have accused her of political interference. At the same time Kövesi rejected statements by government officials saying that Greeks accept corruption as a way of life.