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Ukrainian grain carriers fearing Russian air strikes have been leaving their ships roosting on the Romanian bank of the Danube peninsula, which serves as a border between Romania and Ukraine, for weeks.
Diplomats from the European Union and the United States agreed this safeguard measure with Romanian and Ukrainian authorities in August, said Florian Vizan, director of Romania's largest port, Constanta, who attended the talks.
The threat of attacks has often prevented grain from being transferred from one ship to another on the Ukrainian coast, he said.
That is why the Ukrainians temporarily transfer their ships from the Romanian side as a precautionary measure, he added.
For this reason, grain exports are currently taking so long, Vizan noted.
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Because of the Russian attacks on Ukrainian Black Sea ports, much of Ukraine's grain exports pass through Constanta.