EU Commission President Ursula von der Leyen said on Friday that Ukraine is "part of the European family" and that a fourth package of sanctions for Russia is coming along with a plan to wean the EU off Russian fuel sources by 2027. US President Joe Biden also announced plans to revoke Russia's "most favored nation" trade status and ban key Russian goods like seafood, vodka and diamonds. Meanwhile, explosions were reported on Friday in Lutsk, near the Polish border, in Dnipro, a major stronghold in central-eastern Ukraine, and in Ivano-Frankivsk, in the south-west, Ukrainian authorities say.