The United States and Britain are threatening new sanctions on Syrian President Bashar al-Assad and his supporters as the siege on eastern Aleppo continues. Secretary of State John Kerry urged Syria and Russia to stop bombing Aleppo.

Secretary of State John Kerry: “It’s a humanitarian disaster that is the largest humanitarian disaster since World War II. And it could stop tomorrow morning, tonight, if Russia and the Assad regime were to behave according to any norm or any standard of decency. But they’ve chosen not to.”

Earlier today, 14 members of the same family were reportedly killed in an airstrike in eastern Aleppo. The dead included two six-week-old babies and six other children under the age of eight. Meanwhile, Doctors Without Borders is reporting that four hospitals and an ambulance in East Aleppo were bombed on Friday, making it one of the worst days yet for the city’s collapsing healthcare system.