Russia has assembled at least 70% of military firepower to invade Ukraine

• US officials say Russia has 70% of the military firepower it needs to decide on invading Ukraine. 
• Unnamed officials said there are indicators Putin is planning to invade Ukraine in the coming weeks. 
• However,  the size and scale of the invasion are still unclear. 

WASHINGTON (AP) — Russia has assembled at least 70% of the military firepower it likely intends to have in place by mid-month to give President Vladimir Putin the option of launching a full-scale invasion of Ukraine, US officials say.

The officials, who discussed internal assessments of the Russian buildup on condition they not be identified, sketched out a series of indicators suggesting Putin intends an invasion in coming weeks, although the size and scale are unclear. They stressed that a diplomatic solution appears to remain possible.

Among those military indicators: an exercise of Russia’s strategic nuclear forces that usually is held each fall was rescheduled for mid-February to March. That coincides with what US officials see as the most likely window for invasion. The officials made no suggestion that a prospective conflict would involve the use of nuclear weapons, but the Russian exercise — likely involving the test-launching of unarmed long-range missiles on Russian territory — could be used as a message aimed at deterring the West from intervening in Ukraine.

US officials have said in recent weeks that a Russian invasion could overwhelm Ukraine’s military relatively quickly, although Moscow might find it difficult to sustain an occupation and cope with a potential insurgency.

The ongoing Russian buildup comes as the Biden administration has been disclosing intelligence in hopes of preemptively countering Russian disinformation and blocking Putin’s plans for creating a pretext for an invasion. But it has come under criticism for not providing evidence to back up many of its claims.

On Saturday, The New York Times and The Washington Post said officials were warning that a full Russian invasion could lead to the quick capture of Kyiv and potentially result in as many as 50,000 casualties. A US official confirmed that estimate to The Associated Press. But it’s not clear how US agencies determined those numbers, and any predictions about how an invasion would proceed and the human cost it would inflict are inherently uncertain given the vagaries of war.

President Joe Biden has said he will not send US troops to Ukraine to fight a war. He has, however, ordered additional forces, including headquarters personnel and combat troops, to Poland and Romania to reassure those NATO allies that Washington would fulfill its treaty commitment to respond to Russian aggression against NATO territory. Ukraine is not a NATO member but receives US and allied military support and training.

Army officials on Saturday announced that Maj. Gen. Christopher Donahue, the commanding general of the 82nd Airborne Division, arrived in Poland. About other 1,700 soldiers from the 82nd Airborne are deploying to Poland from Fort Bragg, North Carolina, and 300 soldiers are deploying from Bragg to Germany. In addition, 1,000 Germany-based soldiers are shifting to Romania.

With growing nervousness in Eastern Europe over Russia’s buildup, much attention is focused on its placement of thousands of troops in Belarus, which shares a border not only with Ukraine but also with three NATO nations — Poland, Lithuania, and Latvia. The Biden administration may soon shift some more troops within Europe to allied nations on NATO’s eastern flank, a US official said Saturday without specifying which nations.

Defense Secretary Lloyd Austin said last week that Putin could use any portion of the force he has assembled along Ukraine’s borders to seize Ukrainian cities and “significant territories” or to carry out “coercive acts or provocative political acts” like the recognition of breakaway territories inside Ukraine.

More recently, other U.S. officials provided a more detailed breakdown of Russia’s continuing force buildup, of US assessments of prospects for war, and of the US view of Putin’s approach to the crisis.

The officials reiterated what other Biden administration officials have been saying for weeks — that they don’t believe Putin has made a final decision to invade Ukraine. But it appears possible that the Russian leader set his intentions and is waiting until the last moment to give the go-ahead for an invasion.

Officials sketched out the disposition of Russian forces that have been deployed toward Ukraine’s borders over the past several months, creating what Western officials see as the threat of a full-scale invasion despite repeated assertions by senior Russian officials that they do not intend to attack unprovoked.

As of Friday, the officials said, the Russian army has put in place near Ukraine a total of 83 “battalion tactical groups,” each of which is roughly equivalent in size to an American battalion of between 750 and 1,000 soldiers. That is an increase from 60 battalion tactical groups in position just two weeks ago, they said.

Another 14 battalion tactical groups are on their way to the border area from other parts of Russia, the officials said. Two officials said the US assesses that Russia would want a total of between 110 and 130 battalion tactical groups for use in a full-scale invasion, but Putin could decide on a more limited incursion. Including support units, Russia might be aiming to have 150,000 troops in place for a full-scale invasion, one official said, adding that the ongoing buildup could reach that level in the next couple of weeks.

Depending on Putin’s ultimate objective, the Russian forces could attack Kyiv directly by moving south from current positions in southern Belarus. He might also send forces across the Russian border into eastern and southern Ukraine if his intent is to fracture and destroy a large portion of the Ukrainian army, the officials said.

On the lower end of the scale of military action, Putin might order sabotage, cyberattacks, and other destabilizing actions inside Ukraine with the goal of removing the current government in Kyiv, officials have said.

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Associated Press writer Nomaan Merchant contributed to this report.