Trump rejects international organizations. Round 2 is underway.
The U.N. and other organizations anticipate a second round of reduced U.S. support and engagement with Trump's return.
Joint Comprehensive Plan of Action (JCPOA) 2015
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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.
Diplomats see progress on Iran nuclear talks
Major powers completed a third round of talks in Vienna amid "cautious and growing optimism," seeking ways to resuscitate the 2015 Iranian nuclear deal.
Iran trumpets nuclear progress amid U.S. talks
After a week of U.S.-Iran proximity talks on the 2015 nuclear deal, Iran's president announced Tehran is testing a centrifuge to speed uranium enrichment.
IAEA to get 'less access' to Iran nuclear sites
The head of the U.N. atomic watchdog agency and Iranian top officials announced Tehran will give international inspectors reduced access to nuclear sites.
Top U.N. court to hear Iran's case against U.S.
ICJ ruled it has jurisdiction to hear Iran's case challenging the U.S. economic sanctions reimposed by the former Trump administration in 2018.
Russia to withdraw from Open Skies Treaty
Russia announced plans to withdraw from the Open Skies Treaty, two months after U.S. President Donald Trump's administration abandoned it.
Iran begins 20% uranium enrichment
Iran resumed enrichment of uranium to 20% in a move closer to weapons grade levels and further away from the 2015 nuclear deal.
U.N. lets Iran arms ban lapse despite U.S. dissent
The signatories to the Iran nuclear deal allowed a U.N.-imposed embargo on arms trade with the nation and some travel bans to expire as planned.
U.S. unilaterally restores U.N. sanctions on Iran
The U.S. followed through on its threat to unilaterally restore sanctions against Iran, defying widespread international criticism.
IAEA chief negotiates nuclear access with Iran
Amid rising tensions on the U.N. Security Council over the 2015 Iran nuclear deal, IAEA and Tehran said Tehran will allow inspectors at two nuclear sites.
Security Council rejects U.S. demands on Iran
The U.N. Security Council rejected the Trump administration's attempt to use the 2015 Iran nuclear deal to restore international sanctions against Tehran.
Nationalism rejected on 75th A-bomb anniversary
On the 75th anniversary of the first atomic bombing, Hiroshima's mayor called on world leaders to ban atomic weapons and boost international cooperation.
Trump starts U.S. withdrawal from WHO
U.S. President Donald Trump gave notice to the U.N. triggering a one-year withdrawal process from the World Health Organization over the pandemic.
Trump order meant to hold up ICC probe
U.S. President Donald Trump signed an executive order authorizing sanctions against ICC officials who investigate alleged U.S. war crimes in Afghanistan.
Nuclear watchdog agency to help in global fight against coronavirus
IAEA says countries in need of help can get training in nuclear science knowhow to tackle disease transmission.