The United States has begun the formal process of withdrawing from the 2015 Paris climate agreement.
"President (Donald) Trump made the decision to withdraw from the Paris Agreement because of the unfair economic burden imposed on American workers, businesses, and taxpayers," US Secretary of State Mike Pompeo said.
"The US is proud of our record as a world leader in reducing all emissions, fostering resilience, growing our economy, and ensuring energy for our citizens. Ours is a realistic and pragmatic model."
Once it exits, the US will become the only country outside the accord.
The European Union, however, expressed disappointment at the move. Krista Mikkonen, minister of environment for current European Council president Finland, said it would mean "the rest of us must further increase our cooperation".
The notification sent to the UN of their intention to leave begins a one-year process that will be completed one day after the 2020 US presidential election.
Israel and Iran attacked each other for a fifth straight day on Tuesday, and US President Donald Trump urged Iranians to evacuate Tehran, citing what he said was the country's rejection of a deal to curb nuclear weapons development.
Waves of Russian drones and missiles struck districts across the Ukrainian capital Kyiv early on Tuesday, killing 14 people and injuring 44, according to the interior ministry.
US President Donald Trump left the Group of Seven summit in Canada a day early due to the situation in the Middle East, the White House said on Monday.
Pro-Iranian demonstrations broke out for another night in Iraq on Monday, as Iranian-backed militias in the country threatened to attack US interests, and tit-for-tat strikes between Israel and Iran rolled into the fifth day on Tuesday.
The U.S. military has moved a large number of refueling aircraft to Europe to provide options to President Donald Trump as Middle East tensions erupt into conflict between Iran and Israel, two U.S. officials told Reuters on Monday, speaking on condition of anonymity.
Sheikh Abdullah bin Zayed Al Nahyan, Deputy Prime Minister and Minister of Foreign Affairs, held phone calls with numerous counterparts from around the globe, as the Israel-Iran conflict entered its fifth day on Tuesday.