Caught between the threat of Vladimir Putin's Russia and the wavering of Donald Trump's United States, can Europe really rely on its only two nuclear powers to guarantee deterrence from atomic attacks? We review the joint announcement by video link out of Northwood military base in England to leaders in Rome gathered for a "coalition of the willing" summit on Ukraine.

Ukraine has to think on its feet after yet another sleepless night of deadly bombardments and a week of off-and-on shipments of US air defence supplies. They're back on to express annoyance at Moscow's clear disinterest in Trump's mediation offers.

On that score, the chattering classes often speculate about Trump's rationale, but what about the master of the Kremlin? This in the wake of his transport minister meeting an unfortunate end: first fired then found dead of an apparent suicide. Are the leaders in Rome and Northwood ready for what's next in store?

Produced by Rebecca Gnignati, Elisa Amiri, Ilayda Habip.