It's said that flattery will get you everywhere. On Monday, South Korean leader Moon Jae-in put that old adage to the test, showering U.S. President Donald Trump with effusive praise as Seoul — and Pyongyang — seek to bring Washington back to the negotiating table and kick-start deadlocked nuclear talks.

Speaking during a bilateral meeting with the American president in New York, Moon highlighted what he said was the indispensable role Trump has played in the nuclear talks, insinuating that without him, denuclearization would be but a mere pipe dream.

"Thanks to your bold decision and new approach, we are in the process of solving a problem that no one has been able to solve in the decades past," Moon said of Trump.