In photos: Key takeaways from day one of the UN General Assembly

World leaders descended on New York this week for the annual United Nations General Assembly, where the agenda spans the U.S.-Iran war and Russia's invasion of Ukraine to the fragile ceasefire in Gaza and the risks posed by artificial intelligence. Nearly 130 heads of state and government started taking the podium on Tuesday, including U.S. President Donald Trump, French President Emmanuel Macron, Ukrainian President Volodymyr Zelenskyy, and European Commission President Ursula von der Leyen. Brazil's Luiz Inácio Lula da Silva, Jordan's King Abdullah II and Qatar's Emir Sheikh Tamim bin Hamad Al Thani are also attending. Motorcades, road closures and security details for visiting leaders have choked midtown Manhattan.