MOSCOW, Sept 19, 2025 (BSS/AFP) - Russian Foreign Minister Sergei Lavrov will meet US counterpart Marco Rubio on the sidelines of the United Nations General Assembly next week, Russian state media cited Moscow's UN envoy as saying Friday. US President Donald Trump has expressed mounting frustration at Moscow, and Russian leader Vladimir Putin in particular, for not having struck a deal to end its Ukraine offensive. Trump had pledged to end the conflict rapidly upon returning to office, but Putin has rejected calls for a ceasefire and pledged to continue fighting if a peace agreement on Moscow's terms cannot be reached. Lavrov and Rubio "will discuss an entire range of issues, both bilateral and multilateral. There is no specific agenda...