Russian President Vladimir Putin told his Turkish counterpart Recep Tayyip Erdogan in a telephone conversation on Tuesday that Russia could consider resuming an agreement on grain exports from Ukrainian seaports only after completing an investigation into drone attacks on the port of Sevastopol from Crimea, Reuters writes.

The renewal of the agreement on the export of grain from Ukrainian ports can be considered only after a “detailed investigation of the circumstances of this incident, as well as after receiving real guarantees from Kyiv regarding strict compliance with the Istanbul agreements, in particular those relating to the fact that it will not use the humanitarian corridor for military purposes “, the Kremlin said in a statement.

Russia announced on Saturday that it had suspended its participation in a UN-brokered agreement on agricultural exports from Ukrainian ports following an attack on its fleet in Crimea, which Russia annexed in 2014.

A deal to export Ukrainian grain across the Black Sea was agreed by Russia and Ukraine and negotiated by Turkey and the United Nations in July to ease a food crisis caused in part by Russia’s invasion of Ukraine, a major grain producer. The agreement was supposed to expire on November 19.

According to Ukraine, the agreement, which unblocked three Black Sea ports, allowed it to export about 9 million tons of agricultural products.

NATO on Sunday asked Moscow to urgently extend a UN-brokered deal that allowed Ukraine to resume grain exports across the Black Sea amid the global food crisis, Reuters reported.

“President Putin must stop using food as a weapon and stop his illegal war against Ukraine. We ask Russia to reconsider its decision and extend the emergency agreement, allowing food to reach those who need it most,” NATO spokeswoman Oana Lungescu said.