Russia-Ukraine war: UN chief calls on Russia to return to Black Sea grain deal; US journalist wounded in drone attack – as it happened

Antonio Guterres calls on Moscow to return to deal allowing safe export of Ukrainian grain; US citizen working for AFP hurt in Bakhmut attack

• At a glance: what we know on day 516 of Ukraine invasion

Russia's overnight drone attack on the southern Ukrainian port of Odesa destroyed a grains depot and injured four port employees, Reuters reports Ukraine's southern military command as saying.

Based on preliminary information, three drones were destroyed in the attacks, the command said on social media.

These are still relatively early days of the counteroffensive. It is tough.

It will not play out over the next week or two. We're still looking, I think, at several months.

And the important focus is on making sure that when they do, they're properly trained, they're able to maintain the planes, and use them in a smart way.