The European Union, after hectic last-minute haggling, has approved a tenth package of Russia sanctions on the anniversary of Moscow's invasion of Ukraine, the Swedish EU presidency said late on Friday.

"Together, the EU member states have imposed the most forceful and far-reaching sanctions ever to help Ukraine win the war," the presidency announced on Twitter.

"The EU stands united with Ukraine and the Ukrainian people. We will keep supporting Ukraine, for as long as it takes."