SEOUL — North Korea fired two ballistic missiles on Friday, conducting its third missile take a look at this month hours after it warned of “stronger and sure response” if the US helped impose extra sanctions on the North in response to its current sequence of missile checks.

​Two short-range ballistic missiles took off from Uiju, a county close to the northwestern nook of North Korea, and flew 267 miles earlier than crashing into waters off the nation’s east coast, the South Korean navy mentioned. It added that its analysts had been learning the trajectory and different flight knowledge from the launch to study extra.

The brand new checks raised tensions at a delicate time within the area, as China equipped for the Winter Olympics in Beijing subsequent month and South Korea for its presidential election on March 9. The escalation additionally comes at a time when the Biden administration is struggling in its diplomacy to stave off a possible Russian invasion in Ukraine.

Earlier on Friday, the North’s International Ministry issued an announcement denouncing a proposal by the US that the U.N. Safety Council place contemporary sanctions on North Korea following its six ballistic and different missile checks since September 2021.

Individually on Wednesday, the Biden administration blacklisted five North Korean officials lively in Russia and China who Washington mentioned had been accountable for procuring items for North Korea’s weapons of mass destruction and ballistic missile-related applications.

North Korea resumed ​testing missiles in September​ after a six-month hiatus. It has since carried out at the least seven missile checks, together with the one on Friday. The checks concerned a long-range strategic cruise missile, ballistic missiles rolled out of mountain tunnels and a mini submarine-launched ballistic missile. In ​two ​checks this month, it launched​ what it referred to as​ hypersonic ballistic missiles with removable gliding warheads that ​made them more durable to intercept as a result of they ​may change course throughout flight.

All of the checks violated U.N. Safety Council resolutions that banned North Korea from growing or testing ballistic missile applied sciences or applied sciences used to make and ship nuclear weapons. However the North’s International Ministry insisted on Friday that it was exercising “its proper to self-defense” and that the missile checks had been “a part of its efforts for modernizing its nationwide protection functionality.”

“The U.S. is deliberately escalating the state of affairs even with the activation of unbiased sanctions, not content material with referring the D.P.R.Ok.’s simply exercise to the U.N. Safety Council,” the ministry mentioned in an announcement, utilizing the acronym for the North’s official title, the Democratic Folks’s Republic of Korea. It added, “If the U.S. adopts such a confrontational stance, the D.P.R.Ok. shall be compelled to take stronger and sure response to it.”

The assertion didn’t elaborate on North Korea’s doable future actions. However ​the nation has resumed missile checks since conferences between its chief, Kim Jong-un, and Donald J. Trump, then president, ended without an agreement on the best way to roll again the North’s nuclear weapons program or when to carry sanctions.

These checks indicated that the North was growing more sophisticated ways of delivering nuclear and different warheads to South Korea, Japan and American bases there on its shorter-range missiles, based on protection analysts. A number of the missiles it has examined since 2019 have used stable gas and have made midair maneuvers, making them more durable to intercept, the analysts mentioned.

North Korea has not resumed testing any long-range missiles of the sort that might straight threaten the continental United States because it carried out three intercontinental ballistic missile checks in 2017. However for the reason that Kim-Trump diplomacy collapsed, North Korea has warned that it no longer felt bound by its self-imposed moratorium on nuclear and long-range missile checks. It has since unveiled its largest-ever, still-untested ICBM throughout ​a ​navy parade and exhibition.

Throughout a Workers’ Party meeting in January final 12 months, Mr. Kim vowed to make extra subtle short-range nuclear missiles, hypersonic missiles, giant ICBMs and submarine-launched long-range missiles, in addition to to put navy spy satellites into orbit.

On Friday, North Korea reiterated that its missile checks “didn’t goal any particular nation or pressure and it didn’t do any hurt to the safety of neighboring nations.” However within the take a look at on Tuesday, the North’s hypersonic missile traversed the nation from west to east after which veered to the northeast, flying over the waters between the Russian Far East and Japan towards the Pacific, based on ​its trajectory graphic in one of many pictures launched in North Korean state media.

The missile hit a goal 621 miles away, the North mentioned. ​And because the missile hurtled out of North Korea at as much as 10 instances the pace of sound, aviation regulators briefly halted flights out of some airports on the U.S. West Coast as a precaution.

It was the primary missile take a look at that Mr. Kim had attended since March 2020, based on studies​ in North Korean media.

The take a look at prompted South Korea to reassure its residents this week that its navy can detect and intercept the North’s new missiles​​.

Washington has repeatedly urged North Korea to return to talks, however the nation has mentioned it could not till it was satisfied that the US would take away its “hostile” coverage, together with sanctions.

China, which may veto Washington’s try and impose extra sanctions on the Safety Council, referred to as for dialogue.

“Willful sanctions don’t assist resolve the Korean Peninsula situation, however solely worsen the confrontational temper,” Wang Wenbin, a spokesman of the Chinese language International Ministry, mentioned throughout a information briefing on Wednesday.