after russia s navy itself came under attack in sevastapol. according to open source investigators, several drones struck a warship in annexed crimea at 4:20am. russia has blamed ukraine, while ukraine has called the russian accusations a false pretext. the fallout was immediate. that same day russia pulled out of a un backed deal allowing ukraine to resume exporting grain from the black sea. this is a kremlin spokesman on why. translation: when russia talks about it being - impossible to guarantee the safe passage of shipping in these areas, this kind of a deal is, of course, barely feasible, and it takes on a different character a much riskier, more dangerous one and one without guarantees. despite that warning, 12 more grain ships left ukraine today under the un deal. 10 are carrying wheat, destined for the horn of africa. but first they ll head along the maritime humanitarian corridor to turkey where they ll