The Ukrainian president's meeting with his staunchest European allies came as US President Donald Trump's focus shifts to the war with Iran.

The BBC's Russia editor saw Putin's flagship economic event overshadowed by Ukrainian drones attacks.

Residents of Russia's second-largest city were urged to stay indoors for the first time since the war started.

The Russian president's refusal comes after his Ukrainian counterpart wrote an open letter calling for face-to-face talks.

Ukraine says it struck five ships carrying illegal cargo in the Sea of Azov and in coastal waters of Russian-occupied territories.

Ukraine's president tells the Russian leader that only "direct engagement" between the two countries could end the war, with the US focused on Iran.

Some 18 Republicans joined the Democrats to back the measure, after a smaller group broke ranks on another vote in recent days.

At least 10 people have been injured in the attacks, according to Russian-backed officials.

Johann Wadephul said it was "no secret" Russia had stirred up sentiment against Germany over its support for Ukraine.

The bus was hit in the eastern Donetsk region, an official says.

Several long-range drones struck oil storage facilities near the city, days before Vladimir Putin is due to address the event.

Black smoke could also be seen rising over St Petersburg on Wednesday morning.