Ukraine has said it is ready for grain ships to travel through its waters but is waiting for the go-ahead from the United Nations. Photograph: Ed Ram/The GuardianUnder the grain agreement, the UN and Turkey have guaranteed the safe passage of ships carrying much needed grain from Ukraine. Simmons said the UK was also helping Ukraine understand how much grain Russia had stolen from its occupied territories. “Millions of people around the world are waiting for grain to come out of this and other Ukrainian ports,” said Bridget Brink, the US ambassador to Ukraine. Since its Black Sea ports were blockaded, Ukraine has been using the Danube and its rail network to move its grain.