US imposes new sanctions over Ukraine
US imposes additional sanctions over violence in Ukraine's east
The US has imposed sanctions against separatists in eastern Ukraine, as the crisis there shows no sign of easing.
The sanctions include asset freezes against seven pro-Russian leaders.
The move was announced as Western leaders threatened additional sanctions against Russia, which they accuse of stoking tension in Ukraine.
The US and European Union (EU) leaders have previously imposed sanctions after Russia annexed the Ukrainian region of Crimea in March.
On Friday, the US Treasury Department said it had blacklisted seven rebel leaders, including self-proclaimed mayors, governors and commanders in chief of cities under siege by Ukrainian forces.
Their assets in the US will be frozen and US firms will be banned from dealing with them.
Both Russia and the separatists have dismissed a unilateral ceasefire called by Ukrainian leader Petro Poroshenko, the first step of his peace plan.
