President Trump said a cease-fire agreed in June would lead to limits on Iran’s nuclear program and finish the conflict, but the countries appear far apart.

President Trump wants to curtail military exercises with South Korea, saying they were hostile to North Korea. But under Mr. Kim, the North has become increasingly belligerent toward the South.

President Trump on Sunday instructed the Pentagon to reduce its joint military exercises with South Korea, a key U.S. ally in Asia. He also touted his good relationship with Kim Jong-un, North Korea’s leader.

Amid relentless war in the Middle East, the Iran-backed militants seem poised to renew their conflict with Yemen’s Saudi-backed government.