How Ukraine is achieving success using U.S. weapons in Russian-occupied region of Crimea

Russia says it's fighting raids by Ukrainian forces for a second day in the Kursk region. It appears to be one of the largest incursions into Russian territory in the war. The Ukrainian government has not claimed responsibility or acknowledged the attack. But Ukraine has been trying to intensify its fight against Russia in occupied Crimea and it's achieving some success. Nick Schifrin reports.