It is Mr Zelensky’s first visit to Austria since the start of Russia’s all-out invasion of Ukraine in February 2022.
Mr Zelensky urged the U.S., Europe “and others around the world who called for an end to the war’’ to act.
A NATO source noted that the United States of America was opposed to inviting Zelenskyy to the summit.
A large proportion of the materials are located in Ukrainian territories currently occupied by Russia.
The talks follow a meeting between the United States and Ukraine in Saudi Arabia on Sunday.
There has not yet been confirmation from the Ukrainian side.
According to Russia’s Defence Ministry, nine Ukrainian drones were shot down over Russian territory overnight, including three over the Samara region.
Turkey, a NATO country with ties to Ukraine and Russia, would be happy to host and mediate, Mr Erdogan said in a video address on Monday.
Kirillov, a chief of Russia’s nuclear, biological, and chemical protection troops, was killed outside an apartment building along with his assistant.
Mayor Ihor Terekhov wrote on Telegram on Monday that Russia has once again launched heavy air attacks on Ukraine, with 19 people injured in the large city of Kharkiv in the east of the country
