US, allies prepare new sanctions against Russia after Bucha killings

The United States and its allies on Wednesday prepared new sanctions on Moscow over civilian killings which President Volodymyr Zelenskyy described as "war crimes", as heavy fighting and Russian airstrikes pounded the besieged port of Mariupol.

The southern city of Mariupol has been under attack by Russian forces and constantly bombarded since the early days of the invasion almost six weeks ago, trapping tens of thousands of residents without food, water or power.

"The humanitarian situation in the city is worsening," British military intelligence said on Wednesday.

"Most of the 160,000 remaining residents have no light, communication, medicine, heat or water. Russian forces