SEOUL, South Korea (AP) — The on-again, off-again meeting between President Donald Trump and North Korean leader Kim Jong Un has been an emotional roller coaster for South Koreans, who now await Tuesday's historic summit with both hope and doubt.

The hope is that improved relations between Washington and Pyongyang will ease tensions and dispel the threat of war, which has hung over the region for more than a half-century.

But having seen North Korea go back on its word in the past, such as when it broke a previous nuclear pact in 2002, South Koreans remain cautious about the sudden breeze of peace blowing across their divided peninsula.