1. World leaders are convening at the United Nations General Assembly in New York this week, marking its 80th anniversary. Topics on the agenda include Russia's invasion of Ukraine, the Israel-Hamas conflict, and the UN's own financial crisis.

2. US President Donald Trump is expected to speak during the high-level general debate on Tuesday, in his second term. His administration has previously disengaged from the UN and reduced funding.

3. Key leaders attending the assembly this week include Ukrainian President Volodymyr Zelenskyy on Wednesday, Israeli Prime Minister Benjamin Netanyahu on Friday, and Palestinian Authority President Mahmoud Abbas via video on Thursday due to visa issues in the US. The German General Assembly President Annalena Baerbock has expressed concern about the UN's current state, emphasizing the need for reforms to make it fit for the 21st century. She called upon all member states to push forward with these reforms to ensure the organization can effectively address global issues such as pandemics.