US F-22 fighter jets roared into the sky over South Korea on Monday to start air combat exercises that North Korea says are pushing the peninsula to the brink of nuclear war, CNN reports.
A US 7th Air Force official said the top-of-the-line F-22s are being joined by Air Force and Marine Corps F-35s in the largest concentration of fifth-generation fighter jets ever in South Korea.
The stealthy F-22s and F35s are among 230 US and South Korean aircraft participating in the annual Vigilant Ace 18 air combat drills.
The drills begin after a weekend that saw official sources from both North Korea and the US say the chances of war are growing.
North Korea's bellicose rhetoric came in two phases: On Saturday, a statement from its Foreign Ministry said US President Donald Trump is "begging for a nuclear war" through what it called an "extremely dangerous nuclear gamble on the Korean Peninsula."
A day later, a commentary from Pyongyang's Rodong Sinmun newspaper, carried by the official Korean Central News Agency, said US-South Korea joint air exercises scheduled for Monday to Friday are a "dangerous provocation" pushing the region "to the brink of a nuclear war."
From the US side, White House national security adviser HR McMaster told a conference in California on Saturday that the chances for war on the Korean Peninsula grow daily.
"I think it's increasing every day, which means that we are in a race, really, we are in a race to be able to solve this problem," McMaster told an audience at the Reagan National Defense Forum in Simi Valley.
McMaster made the comment when asked if North Korea's launch of an intercontinental ballistic missile in the early hours of Wednesday morning local time had increased the chance of war.
"There are ways to address this problem short of armed conflict, but it is a race because he's getting closer and closer, and there's not much time left," McMaster said, referring to North Korean leader Kim Jong Un.
With every missile launch or nuclear test, Kim has improved his country's capabilities, McMaster said.
US Sen. Lindsey Graham, a Republican hawk who sits on the Senate Armed Services Committee, told CBS News that North Korea's advancing military technology makes the possibility of pre-emptive war more likely.
"I think we're really running out of time," he said.
Graham also said he will urge the Pentagon not to send any military dependents to South Korea.
"It's crazy to send spouses and children to South Korea, given the provocation of North Korea. So I want them to stop sending dependents. And I think it's now time to start moving American dependents out of South Korea," he said.