In Ukraine and abroad, ordinary citizens are joining the fight. In Kyiv, Mariupol, Kharkiv, and in dozens of towns behind the Russian advance, citizens’ militias are supporting the civil defense, and hundreds of foreign citizens have signed up to join the Ukrainian armed forces – including American and British nationals.

“I do support that, and of course, that is something that people can make their own decisions about,” Truss told the BBC.

Many seafarers are joining the war effort in their own way by expressing solidarity, calling on owners to support Ukraine, and refusing to call at Russian ports.

In a recent video appeal, Capt. Luchyno Alexey Olegovich, a Ukrainian master, noted that officers from his nation have served the international fleet with professionalism for decades – and he called for shipowners to give back in this time of need.

“While we continue our work (at sea), our families are being attacked. Our children are hiding in basements. We receive letters of support from our shipowners, but I think that this is categorically not enough,” he said.

Capt. Olegovich said that after his ship reaches its destination port, it is due to load cargo at a Russian port. He has refused to take the ship to Russia.

“There are two options: either they will change me, or the charterer will not go to the Russian port,” he said.

Commercial transactions with Russian entities are likely to become much more challenging once banks open Monday.