Russia threatened retaliation against a U.S. and European Union decision to stiffen sanctions, saying the move to expand penalties undermines the peace process in Ukraine.
Russia's War Against Ukraine
Bloomberg: Russia weighs response as US and EU add more sanctions
Young residents of the southern Ukrainian city of Berdyansk, bordering with the Donetsk Oblast, dig trenches on Sept. 9 to help Ukrainian forces protect the city from possible pro-Russian rebels attacks.
