Ros Atkins on... Russia's food war
The West has accused the Russian military of holding food supplies hostage for millions around the world.
The war in Ukraine has blocked the country's main ports on the Black sea, severely impacting food supply chains around the world. Ukraine is a major exporter of wheat, but now millions of tonnes of grain are stuck - impacting the countries that can least afford it.
Russia denies it is weaponising food supplies, claiming that Ukraine's attempts to mine the Black sea and sanctions are to blame - as the BBC's Ros Atkins explains.