World leaders gather at UN as Mideast tensions explode
Escalating clashes between Israel and Hezbollah threatened to overshadow US President Joe Biden's final appearance at the UN's signature annual event on Tuesday as diplomats scrambled to avert an all-out regional war.
The gathering of dozens of world leaders, the high point of the diplomatic calendar, comes a day after Israeli air strikes on Lebanon killed more than 490 people, according to local authorities.