Trump strongly rejects international cooperation. Round 2 is underway.
Here's a timeline of Trump's actions involving international organizations and treaties, from his first term to the present.
Iran
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Iran and European powers resume nuclear discussions at Geneva
The secretive meetings reflect worries about Iran's nuclear program, its military aid to Russia, and Middle East tensions.
Iran and European powers to sustain nuclear talks after Geneva meeting
Switzerland hosted Britain, France, Germany and Iran for talks on several issues, including Tehran's nuclear program.
Inflation is down, but politics and conflicts dim economic outlook
IMF blames lackluster global economy on slowing growth, potential trade wars and regional conflicts.
In Beirut, refugee chief says civilian protection laws 'cannot be ignored'
The U.N. high commissioner for refugees cites 'many instances of violations of international humanitarian law.'
The war in Gaza is permanently disabling thousands of children
For disabled kids and their families, navigating forced displacements amid the rubble is a life-or-death challenge.
U.N. adopts 'pact' of new governance ideas for 21st century challenges
The pact, approved by consensus, outlines 56 broad actions, including an explicit call to phase out fossil fuels.
Envoy to Yemen tells U.N. Security Council of a new 'path to de-escalate'
The U.N. secretary-general's special envoy for Yemen said regional dangers grew but the warring parties are talking.
NATO's most powerful member tries to reassure rest of alliance and world
As summit host, Biden's administration projected unity for Ukraine and deflected concern about Trump.
NATO at 75 grapples with a 'constant threat of new types of attacks'
The Biden administration hosts a celebration for an expanding NATO's 75th anniversary amid political turmoil.
U.N. panel demands Iran-backed Yemen rebels cease Red Sea attacks
The U.N. Security Council resolution condemned Houthi attacks in shipping lanes for a second time this year.
Journalism watchdog's global index shows press freedom is under attack
Reporters Without Borders warned that governments' support for press freedom around the world has been shrinking.
U.S. accuses Russia of shipping fuel to North Korea above the U.N. limits
Russia is shipping refined petroleum to North Korea, which is supplying Russia with weapons against Ukraine, officials say.
Opinion | Science will prevail over profits for a planet of plastic eaters
Some pointed to a recent landmark human rights ruling on climate change as a potential use for a Global Plastics Treaty.
U.S. vetoes resolution seeking full U.N. membership for Palestine
The humanitarian nightmare and attacks on civilians in Gaza dominated the U.N. Security Council's quarterly open debate.
Europeans and U.S. condemn Iran's acceleration in nuclear program
The U.N. nuclear watchdog has reported that Tehran increased its output of near weapons-grade uranium.