WASHINGTON, Dec 11 - Russia could launch its lethal new intermediate-range ballistic missile against Ukraine again soon, the Pentagon said Wednesday, as both sides wrestle for a battlefield advantage that will give them leverage in any negotiations to end the nearly 3-year war.

Sabrina Singh, Pentagon spokeswoman, told reporters in a briefing that an attack could be carried out “in the coming days.” She added that the U.S. does not consider this missile — called the Oreshnik — a game changer on the battlefield, but that the Russians are “trying to use every weapon that they have in their arsenal to intimidate Ukraine,” The Associated Press reported.

She said the U.S. is basing its warning on a new intelligence assessment, but she couldn’t provide any other details, including where Russia may strike.

U.S. officials said earlier Wednesday that the U.S. was seeing the Russians make preparations for another launch of the missile, which was used for the first time last month. The officials spoke on condition of anonymity to discuss the sensitive information.

The threat comes as President-elect Donald Trump has vowed to end the war and Western allies suggest that negotiations to do so could begin this winter.

Singh said the U.S. will continue to support Ukraine, including with additional air defense systems designed to protect the country against air assaults. Just days ago, the U.S. promised close to $1 billion in new security aid to Ukraine, including munitions for air defense.

The Russian Defense Ministry also suggested that Moscow is prepared to retaliate because Ukraine used six U.S.-made ATACMS missiles to strike a military air base in Taganrog in the southern Rostov region on Wednesday, injuring soldiers. It said two of the missiles were shot down by an air defense system and four others deflected by electronic warfare assets.

“This attack with Western long-range weapons will not be left unanswered and relevant measures will be taken,” the ministry said in a statement.

This isn’t the first time that U.S. officials have warned of potential Russian action or strategic moves, in part as a diplomatic effort to message Moscow and possibly sway decisions.

In the run-up to Russia’s February 2022 invasion of Ukraine, the U.S. openly discussed intelligence that Russia was readying troops to move on Kyiv. And later publicly said Moscow was positioning operatives in eastern Ukraine to conduct a “false-flag operation” that would create a pretext for its troops to invade.

According to the U.S. officials, Russia has only a handful of the Oreshnik missiles and they carry a smaller warhead than other missiles that Russia has regularly launched at Ukraine.

Russia first fired the missile in a Nov. 21 attack against the Ukrainian city of Dnipro. Surveillance camera video of the strike showed huge fireballs piercing the darkness and slamming into the ground at astonishing speed. It was the first time the weapon was used in combat.

Within hours of the attack on the military facility, Russian President Vladimir Putin took the rare step of speaking on national TV to boast about the new, hypersonic missile. He warned the West that its next use could be against Ukraine’s NATO allies who allowed Kyiv to use their longer-range missiles to strike inside Russia.

The attack came two days after Putin signed a revised version of Russia’s nuclear doctrine that lowered the threshold for using nuclear weapons. The doctrine allows for a potential nuclear response by Moscow even to a conventional attack on Russia by any nation that is supported by a nuclear power.

That strike also came soon after President Joe Biden agreed to loosen restrictions on Ukraine’s use of American-made longer-range weapons to strike deeper into Russian territory, and just one day after the U.S. said it was giving Ukraine antipersonnel mines to help it slow Russia’s battlefield advances.

“We believe that we have the right to use our weapons against military facilities of the countries that allow to use their weapons against our facilities,” Putin said at the time. (ap/ez)