Marines of the U.S., left, and South Korea, wearing blue headbands on their helmets, take positions after landing on a beach during the joint military combined amphibious exercise, called Ssangyong, part of the Key Resolve and Foal Eagle military exercises, in Pohang, South Korea, March 12, 2016. Credit: Kim Jun-bum | AP

TOKYO — President Donald Trump has scaled back U.S. military exercises with South Korea but apparently not enough to satisfy North Korea.

Pyongyang’s state-run Korean Central News Service (KCNA) on Thursday issued a strongly worded condemnation of the smaller exercises in what may be another example of hardening attitudes since a summit meeting in Hanoi between Trump and North Korean leader Kim Jong Un collapsed last week without an agreement.

The exercise, called Dong Maeng, or “Alliance,” runs March 4-12. It is seen as a replacement for the canceled annual Foal Eagle exercises that involved thousands of troops and massive displays of force, and for Key Resolve, an exercise revolving around computer simulations. Trump canceled Foal Eagle in 2018 at the time of his first summit with Kim in Singapore.

Justifying his latest decision to scale back exercises with South Korea, Trump focused on their cost, although officials have also previously acknowledged that maneuvers were suspended to allow room for diplomacy with North Korea.

North Korea routinely condemns any joint exercises conducted by the United States and South Korea, and it even denounced South Korean independent air force exercises in December. But the latest statement is notable for its timing and forcefulness about the latest war games.

“It is a violent violation of the joint declarations and statements that North Korea reached with the U.S. and South Korea,” KCNA wrote.

“This also represents a frontal challenge to the aim and desires of all [Korean] people and the international community for peace and stability on the Korean Peninsula,” it added.

KCNA denounced the scaling back of the exercises as merely a name change and said they were an attempt to ramp up war capabilities.

The Pentagon described this week’s exercises as “newly designed Command Post exercises and revised field training programs,” focused on maintaining joint readiness while forgoing elements that in the past had been intended as a show of force.

North Korea has begun rebuilding a satellite rocket launchpad and engine test site, according to satellite images made public this week, in an ominous sign about its attitude toward negotiations on denuclearization.

South Korea’s National Intelligence Service also told lawmakers this week that it has spotted the movement of transport supply vehicles at the Sanumdong complex on the outskirts of Pyongyang where intercontinental ballistic missiles and space rockets have been manufactured in the past, South Korea media reported.

And in another sign that positions may be hardening, White House national security adviser John Bolton warned that the United States may tighten sanctions if North Korea does not denuclearize.

Washington Post writer Min Joo Kim contributed to this report.