Ukrainian President Volodymyr Zelenskyy says Western supplies of weapons must outpace Russia’s attacks and urged the world to move faster in its decision-making because “tragedies are outpacing life; the tyranny is outpacing democracy.”

In a video address Wednesday to the World Economic Forum gathering in Davos, Switzerland, Zelenskyy stood and asked for a moment of silence for victims of a helicopter crash in Ukraine, who included his interior minister.

While a cause is not yet known, he said that “every individual, every death is a result of war.”

He says that the world needs to react quicker to challenges like global, climate change and hunger, saying there’s a “time crisis.” He says that Russia started the war, and the world needed days to react with the first sanctions, with “the time the free world uses to think is used by the terrorist state to kill.”

He said the world must not hesitate: “The supplying of Ukraine with air defense systems must outpace Russia’s vast missile attacks. The supplies of Western tanks must out outpace another invasion of Russian tanks.”

Asked about engaging with Russia, Zelenskyy said “they will have to recognize their own mistakes, they will have to recognize Ukrainian statutes and they will have to really respect our territorial integrity.”

He also told the forum that he was not worried about his personal security after his interior minister was killed in a helicopter crash earlier in the day. He made the comment in a question and answers session at the forum.

This report includes material from Reuters and The Associated Press.