US President Joe Biden accused Wednesday Russia of violating the core tenets of membership in the United Nations over the war in Ukraine, claiming that Moscow was making "irresponsible" threats to use nuclear weapons.

During his speech at the United Nations General Assembly in New York, Biden criticized Russian President Vladimir Putin over the war.

"Again, just today, President Putin has made overt nuclear threats against Europe, in a reckless disregard for the responsibilities of the nonproliferation regime," Biden said.

"A permanent member of the United Nations Security Council invaded its neighbor, attempted to erase a sovereign state from the map. Russia has shamelessly violated the core tenets of the United Nations Charter," the US President claimed.

Biden at the UN General Assembly calls out Russian leader Vladimir Putin, who threatened the West on Wednesday:

“A permanent member of the United Nations Security Council invaded its neighbor ... Russia has shamelessly violated the core tenets of the United Nations charter.” pic.twitter.com/sUyNaJc7at

— The Recount (@therecount) September 21, 2022

Earlier, Putin announced a partial mobilization in Russia as the war in Ukraine has now lasted for almost seven months.

"A nuclear war cannot be won and must never be fought," Biden said.

The US President claimed that Russia was not threatened by any side and that Moscow had sought conflict, vowing that the United States would stand in solidarity with Ukraine.

US does not seek 'Cold War' or 'conflict' with China

Regarding the ongoing tensions with China, Biden told the United Nations that the United States does not seek "conflict" with China or a new Cold War.

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"Let me be direct about the competition between the United States and China. As we manage shifting geopolitical trends, the United States will conduct itself as a reasonable leader," he said.

He also claimed that "we do not seek conflict. We do not seek a Cold War. We do not ask any nation to choose between the United States or any other partner."

Nuclear wars 'cannot be won,' US ready to negotiate arms treaties

In a different context, Biden warned that nuclear wars "cannot be won" and claimed that Washington is ready to pursue arms control measures.

"A nuclear war cannot be won, and must never be fought," Biden told the UN General Assembly, saying that Moscow made "irresponsible nuclear threats."

"The United States is ready to pursue critical armed control measures," said Biden, vowing that Washington will not allow Tehran to obtain atomic weapons, which the Iranian President denied seeking only a few hours earlier at the same session. 

Americans 'stand with the brave women of Iran'

Regarding the case of young Iranian journalist, Mahsa Amini, Biden claimed that Americans "stand with the brave women of Iran."

"Today we stand with the brave citizens and the brave women of Iran who right now are demonstrating to secure their basic rights," the US President told the UNGA, completely disregarding Iranian reports and CCTV footage which clearly show that Amini was not touched by the police officer and that her death was the result of a medical condition she is suffering from. 

Biden supports expanding UN Security Council

Furthermore, Biden indicated that Washington supports the expansion of the UN Security Council to better represent areas including Africa and Latin America.

"The United States supports increasing the number of both permanent and non-permanent representatives of the council," he said, adding that "this includes permanent seats for those nations we've long supported -- permanent seats for countries in Africa, Latin America, the Caribbean. The United States is committed to this vital work."

Biden calls for the extension of grain deal

During his speech, Biden said, "The United States will work with every nation, including our competitors, to solve global problems like climate change. Climate diplomacy is not a favor to the United States or any other nation and walking away hurts the entire world."

Biden said that US sanctions allow Russia to export food and fertilizer, claiming that it was "Russia's war that is worsening food insecurity."

He also called for the extension of the July grain deal brokered by the United Nations and Turkey, which allowed Ukraine to resume Black Sea food and fertilizer exports.

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