Trump's decision to waive sanctions on Russia and tariffs on its goods days before they were to take effect will embolden Moscow to keep attacking Ukraine, Zelensky said on Saturday.
The march coincides with protests in France against rising costs and declining public services, and smaller protests in Belgium. There are also mass protests in Albania.
Russia and Iran have had a relationship and ties going back many decades, with Russia being involved in supporting the Iranian regime over a large span of time.
Pope Leo had an operation on Tuesday to remove the lower lobe of his right lung, and will hold his first public engagement since surgery on Sunday.
Belgian student groups have said they are protesting against rising education costs. The protests are partly inspired by demonstrations in neighboring France.
Demonstrations over corruption and a lack of jobs have begun spreading throughout Albania, with protesters smashing windows, setting alight government buildings, and clashing with police.
Zelensky also said that Ukraine, the US, and Russia could meet during a G20 summit in the US, but Washington and Moscow have not confirmed the meeting, and other venues are also possible.
The student-led movement broadened from protesting the eduction system to a nationwide demonstration against inequality and excessive public spending.
Ukraine's General Staff said on Saturday that Ukrainian forces remained in control of the eastern town of Dobropillia, describing Russia's claim to have captured it as untrue.
Multiple US officials familiar with the matter told CBS that Army Chief of Staff Gen. Randy George’s risk analysis was included in the Pentagon's Global Force Management Allocation Plan in December.
The legislation, whose primary backer in Congress was the late Senator Lindsey Graham, was signed into law by Trump in September.
