People worldwide mark the day under the slogan #BalanceforBetter, calling for a more gender-balanced world.
While mainly procedural, the departure represents a major blow to UNESCO, which was established after World War II to foster peace.
The fighting in Gaza casts doubt over recent understandings brokered by Egypt and U.N. officials to reduce tensions.
While much of the world faces deepening poverty, a tiny handful of people have increased their wealth by more than $1 trillion.
The president strikes a conciliatory tone a year after deriding the autocrat at the U.N. as "Little Rocket Man" and threatening to "totally destroy North Korea."
The move comes as President Trump and his Middle East point men, Jared Kushner and Jason Greenblatt, prepare for the rollout of a much-vaunted but as yet unclear peace plan for Israel and the Palestinians.
Syria's military claims the jet was targeted by Israel over Syrian territory as it flew sorties against Islamic State militants. Meanwhile, Syrian forces reach the border fence at the edge of the Israeli-occupied Golan Heights.
The authority on human rights blasts the yawning gap between rich and poor in America, saying U.S. democracy is being "steadily undermined" by those in power and other vested interests.
Kim Yong Chol, a trusted aide to Kim Jong Un, is New York-bound to try to salvage a summit between Kim and Donald Trump on the future of North Korea's nuclear program.
Kuwait calls for the session after more than 50 Palestinians are killed by Israeli fire amid mass protests on the deadliest day in Gaza since a 2014 cross-border war.