FirstUp: Ukraine coalition summit in Paris and other big news today

World leaders will gather in Paris on Thursday for a high-stakes summit on Ukraine's security. US Secretary of State Marco Rubio will visit oil-rich Guyana as part of his three-nation trip to the Caribbean. Bangladesh's Chief Adviser Muhammad Yunus will address the Boao Forum for Asia in Beijing read more French President Emmanuel Macron speaks during a press conference at the end of the conference in support of Ukraine, with European leaders and government representatives, at the Elysee Palace in Paris, France, February 26, 2024. Reuters It's Thursday, and a lot is expected today. World leaders will gather in Paris…