The United States is tracking enough indicators surrounding Russian military activity near Ukraine to trigger "a lot of concern," the top U.S. military officer said on December 2, while Ukraine's defense minister warned of a possible large-scale military offensive by Moscow next month.
Army General Mark Milley, chairman of the Joint Chiefs of Staff, declined to speculate about the options the United States might consider in the event of a Russian invasion. But Milley stressed the importance of Ukraine's sovereignty to Washington and to the NATO alliance.
"There's significant national security interests of the United States and of NATO member states at stake here if there was an overt act of aggressive action militarily by the Russians into a nation state that has been independent since 1991," Milley said during a flight from Seoul to Washington.
SEE ALSO: What's Behind The Russia-Ukraine War Fears -- And What Might Actually Happen?Milley also said it would be a mistake for any country to draw broad strategic conclusions about the U.S. response based on its withdrawal from Afghanistan in August.
Meanwhile, Ukrainian Defense Minister Oleksiy Reznikov accused Russia of gearing up for a possible large-scale military offensive next month. Speaking in parliament on December 3, Reznikov said that Kyiv would not stoke tensions in the area, but that "Ukraine will fight back, if necessary."
"Our intelligence is looking into all possible scenarios, including the worst one. It emphasizes that the likelihood of large-scale escalation by Russia exists. The most likely time we must be ready to stand against such an escalation will be the end of January," he said.
"The better we work together with our [Western] partners, the less the threat of escalation will be. The way to avoid the escalation is to make the price of possible escalation unacceptable for the aggressor. Ukraine is most interested in the political and diplomatic settlement scenario," he added.
U.S. Secretary of State Antony Blinken urged Russia on December 2 to withdraw its troops deployed near Ukraine and seek a diplomatic solution to escalating tensions in the region, warning Moscow of "severe costs" in case of an aggression against its neighbor.
Blinken made the statements after meeting his Russian counterpart Sergei Lavrov on December 2 in Stockholm on the sidelines of a gathering of foreign ministers of Organization for Security and Cooperation in Europe (OSCE) nations.
"The United States and our allies and partners are deeply concerned by evidence that Russia has made plans for significant aggressive moves against Ukraine, including efforts to destabilize Ukraine from within and large-scale military operations," Blinken told a news conference after the talks.
SEE ALSO: Blinken Warns Russia Of 'Significant Costs' In Case Of Aggression Against UkraineBlinken said he urged Lavrov during what he called a "candid" meeting to seek a diplomatic exit from the crisis, while reaffirming Washington's "unwavering" support for Ukraine’s "territorial integrity, its sovereignty, its independence."
Blinken's talks with Lavrov came a day after a meeting of NATO foreign ministers in Riga, Latvia, where Blinken said Russia's military operations appeared to be an effort to destabilize Ukraine from within.
Ukraine and Western officials say Russia has kept tens of thousands of troops and heavy equipment near the Ukrainian border since war games held in western Russia earlier this year.
SEE ALSO: Zelenskiy Says Coup Plot Uncovered, Ukraine Ready For Any Escalation With RussiaRussia, which backs separatists fighting against Kyiv in eastern Ukraine, denies it is plotting an attack. Moscow blames Ukraine and its Western backers for fanning tensions, pointing to what it says is a similar Ukrainian military buildup.
On December 1, Russia's Defense Ministry said more than 10,000 Russian troops started military exercises in the country's southwest, close to the Ukrainian border.
Blinken cautioned Moscow that despite what he called "a massive Russian disinformation campaign," Ukraine was neither threatening nor seeking a military confrontation with Russia.
"The only threat is that of renewed Russian aggression toward Ukraine," Blinken said, adding that Moscow will face serious consequences in case Russia invades.