CAIRO (REUTERS) - Russia's Foreign Minister Sergei Lavrov offered reassurances over Russian grain supplies to Egypt during a visit to Cairo on Sunday (July 24), amid uncertainty over a deal to resume Ukrainian exports from the Black Sea.

Egypt is one of the world's top wheat importers and last year bought about 80 per cent of those imports from Russia and Ukraine.

Russia's Feb 24 invasion of Ukraine disrupted shipments and sped up a rise in global commodity prices, delivering a financial shock to Egypt.

In its response to the war, Egypt has been torn between long-standing ties to Russia and its close relationship to Western powers that have sanctioned and sought to isolate Moscow.

Western embassies had lobbied Egypt and the Arab League ahead of Lavrov's visit, which included talks with President Abdel Fattah al-Sisi and representatives of the Arab League.

"We reaffirmed the commitment of Russian grain exporters to meet all their commitments," Lavrov said in a press conference with Egyptian counterpart Sameh Shoukry.

"We discussed specific parameters of cooperation in this area, agreed on further contacts between the relevant ministries, and we have a common understanding of the causes of the grain crisis."

Since the start of the war, a blockade of Ukrainian ports by Russia's Black Sea fleet has trapped tens of millions of tonnes of grain, worsening global supply chain bottlenecks.

Russia, Ukraine, Turkey and the United Nations signed a deal last Friday to restart Ukrainian wheat exports by sea, but a Russian strike on Odesa on Saturday put implementation of the agreement in doubt.

Russia has laid blame for the halt in Black Sea trade on Western sanctions and Ukrainian mines, though under Friday's deal pilots would guide ships along safe channels. Lavrov said he hopes the United Nations would succeed in removing"illegitimate restrictions" on shipping.

"There are still 70 foreign vessels from 16 or 17 countries standing there as almost hostages, including, incidentally, one vessel blocked in Ukrainian ports because of the threat of mines, which is supposed to bring food to Egypt," he said.

He later told the Arab League that any ships coming to pick up grain from Ukrainian ports would be inspected to make sure they are not carrying weapons.

Russia has continued to supply Egypt with wheat since the war's outbreak, selling to both the government and the private sector.

Lavrov is visiting Egypt at the start of a regional tour of African states.