Volodymyr Zelensky says Joe Biden 'true leader' after US President calls Russian invasion of Ukraine 'genocide'

Ukrainian President Volodymyr Zelensky has praised Joe Biden after the US President called Russia's actions in Ukraine "genocide" on Wednesday.

"True words of a true leader @POTUS," Zelensky tweeted. "Calling things by their names is essential to stand up to evil. We are grateful for US assistance provided so far and we urgently need more heavy weapons to prevent further Russian atrocities."

Biden on Tuesday (local time) stood by his characterisation of Russia's actions in Ukraine as "genocide," saying Russian President Vladimir Putin "is trying to wipe out the idea of being able to be Ukrainian."

"I called it genocide because it has become clearer and clearer that Putin is just trying to wipe out the idea of being able to be Ukrainian and the evidence is mounting," Biden told reporters as he prepared to board Air Force One to return to Washington after an event on the economy in Iowa.

"We'll let the lawyers decide internationally whether or not it qualifies, but it sure seems that way to me," he said. 

Biden referred Russia's invasion of Ukraine as genocide for the first time on Tuesday with a declaration that Americans' ability to pay for gasoline should not hinge on whether a dictator "commits genocide" half a world away.

The White House did not immediately respond to a request for comment on the remark. Biden has repeatedly called Putin a war criminal, but he has not declared that Russia has committed genocide in Ukraine.

"Your family budget, your ability to fill up your tank, none of it should hinge on whether a dictator declares war and commits genocide a half a world away," Biden said at an event in Iowa on fuel prices. The president referred to expensive gasoline as a "Putin price hike."

Under international law, genocide is an intent to destroy - in whole or in part - a national, ethnic, racial or religious group.

According to U.N. convention, this includes through killings; serious bodily or mental harm; inflicting lethal conditions and measures to prevent births, among other means.

Biden has made a handful of statements about the war that U.S. officials have later had to walk back. The president stirred controversy on a recent trip to Poland when he ad-libbed a line at the end of a speech and said that Putin should not be allowed to remain in power. The White House clarified that U.S. policy was not to seek regime change.

Genocide, considered the most serious international offense, was first used to describe the Nazi Holocaust. It was established in 1948 as a crime under international law in a United Nations convention.

Since the end of the Cold War, the State Department has formally used the term seven times. These were to describe massacres in Bosnia, Rwanda, Iraq and Darfur; the Islamic State's attacks on Yazidis and other minorities; China's treatment of Uighurs and other Muslims and this year over the Myanmar army's persecution of the Rohingya minority. China denies the genocide claims.

At the State Department, such a determination normally follows a meticulous internal process. Still, the final decision is up to the secretary of state, who weighs whether the move would advance American interests, officials said.

A determination of genocide does not automatically unleash punitive U.S. action. But human rights advocates say it can help mobilize an international response to prevent further atrocities.

Reuters / Newshub.