Ukraine is creating a temporary sea route to resume grain shipments after Russia pulled out of a deal that allowed Ukrainian grain to be exported through a UN-backed safe sea corridor, Kiev said in an official dispatch today.

Russia attacked the port of Odesa, on Ukraine’s Black Sea coast, for a second night in a row on Tuesday after Moscow pulled out of the deal on Monday, which included Moscow’s withdrawal of safe-navigation guarantees.

In a letter dated July 18 and submitted to the UN maritime agency, the International Maritime Organization, today, Ukraine says it has “decided to establish a recommended sea route on a temporary basis”.

“Its purpose is to facilitate the unblocking of international transport in the northwestern part of the Black Sea,” Vasyl Skurakov, Ukraine’s acting minister for communities, territories and infrastructure development, said in the letter.

Ukraine adds in the letter that the additional route it creates will lead into the territorial waters and exclusive economic zone of Romania, which is one of the neighboring countries on the Black Sea.

Ukrainian President Volodymyr Zelensky has said the Black Sea grain deal could continue without Russia’s involvement and that Ukraine is considering options to continue meeting its food supply commitments.

Following Russia’s move to withdraw from the agreement, insurers are reconsidering their willingness to cover ships in Ukraine.

A cargo insurance mechanism that provided cover for shipments through the previous corridor has been suspended, insurance brokerage and risk management firm Marsh told Reuters yesterday.

Additional war risk premiums imposed upon entry into the Black Sea area should be renewed every seven days.

They already cost thousands of dollars and are expected to rise, and shipowners may be reluctant to allow their ships to enter a war zone without Russia’s agreement. There is also the danger of sea mines.