Drifting Black Sea mines threaten to scuttle global trade

Russia and Ukraine have traded accusations after mines were discovered in the Black Sea and Bosphorus Strait. Russia says that Ukrainian mines broke free after a storm, but Ukraine says that Russia planted the mines. Regardless, they are posing a threat to local fisherman and international commerce vessels alike, and could further disrupt global trade. Al Jazeera's Sinem Koseoglu has more from Istanbul.