Ukrainian President Volodymyr Zelenskyy on Thursday urged the world to send more heavy weapons to his country to defend Ukraine from Russia's "special military operation" as he addressed the Portuguese parliament in virtual format.

He asked the Western nations to impose further sanctions against Moscow and asked Portugal to support a global embargo on Russian oil.

During his speech, he also accused Russian forces of committing many atrocities in Ukraine which the Russian side has repeatedly blasted as fake news. 

(With input from agencies)