Putin says 'unfriendly countries' must buy Russian oil and gas in rubles.

[bluewater]

17. The Illegal Iraq War? US Abrogating treaties? So, um yes.

Iraq war was illegal and breached UN charter, says Annan

The United Nations secretary general, Kofi Annan, declared explicitly for the first time last night that the US-led war on Iraq was illegal.

Mr Annan said that the invasion was not sanctioned by the UN security council or in accordance with the UN's founding charter. In an interview with the BBC World Service broadcast last night, he was asked outright if the war was illegal. He replied: "Yes, if you wish."

He then added unequivocally: "I have indicated it was not in conformity with the UN charter. From our point of view and from the charter point of view it was illegal."
https://www.theguardian.com/world/2004/sep/16/iraq.iraq

United States withdrawal from the Joint Comprehensive Plan of Action (aka Iran Nuclear Agreement)
https://en.wikipedia.org/wiki/United_States_withdrawal_from_the_Joint_Comprehensive_Plan_of_Action

US formally withdraws from Open Skies Treaty that bolstered European security
https://www.cnn.com/2020/11/22/politics/us-withdrawal-open-skies/index.html

U.S. Withdraws From Intermediate-Range Nuclear Forces Treaty
https://www.defense.gov/News/News-Stories/Article/Article/1924779/us-withdraws-from-intermediate-range-nuclear-forces-treaty/

U.S. withdraws from international accords, says U.N. world court 'politicized'
https://www.reuters.com/article/us-usa-diplomacy-treaty-idUSKCN1MD2CP

That's a partial list I googled in 5 minutes.