"Russia sanctions unanimously extended for another six months because of a lack of Minsk Agreements implementation," a spokesperson for EU President Donald Tusk tweeted from a summit in Brussels.
The sanctions target whole sectors of the Russian economy including its valuable oil businesses.
The EU-brokered Minsk peace agreement, endorsed by both Moscow and Kiev, was reached in late 2014 and re-worked in early 2015, but is violated regularly.
Earlier on Thursday the EU extended by one year separate sanctions imposed over Russia's annexation of Crimea from Ukraine in 2014.
These measures prohibit certain exports and imports from Crimea, and ban EU-based companies from investment and tourism services in the strategic Black Sea peninsula.
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