WATCH: Secretary of Defense Austin and Gen. Milley say Ukraine military aid will continue

U.S. Secretary of Defense Lloyd Austin says that the Ukraine Defense Contact Group leaves its recent meetings “with lots of momentum” and plans to support Ukraine with the military aid that country needs “over the long haul.”

Watch the press conference in the player above.

“That means meeting Ukraine’s needs for today’s battlefield,” Austin said at a press conference at Ramstein Air Force Base in Germany Thursday as he announced a $675 million package of heavy weaponry, ammunition and armored vehicles for Ukraine.

“I’m especially pleased by the emphasis today on positioning this contact group to support Ukraine’s self-defense over the long haul,” he added.

Austin’s comments came as U.S. Secretary of State Antony Blinken paid an unannounced visit to Kyiv as the Biden administration ramped up military aid to Ukraine and other European countries threatened by Russia by more than $2.8 billion.

The new assistance comes as the U.S. and its allies seek to boost momentum in Ukraine’s counteroffensive against Russia in the south and east.

In meetings with senior Ukrainian officials, including President Volodymyr Zelenskyy, Blinken said the administration would provide $2 billion in long-term foreign military financing to Ukraine and 18 of its neighbors.

The new funding and military weapons are designed to provide enduring training and support for what U.S. Gen. Mark Milley, chairman of the Joint Chiefs of Staff, called a “very deliberate” counteroffensive that Ukrainian troops have launched to retake territory gained by the Russians in the south and east.

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The White House said Biden was holding a call with allies and partners “to underscore our continued support for Ukraine as it defends itself from Russian aggression.”

“We are seeing real and measurable gains from Ukraine in the use of these systems,” said Milley.

He said Russia is suffering significant equipment and troop losses. But, he added, “The war is not over. Russia is a big country. They have very serious ambitions with respect to Ukraine. So sustainment of Ukraine to continue their fight for their survival will be necessary.”

Pending expected congressional approval, about $1 billion of the $2.2 billion will go to Ukraine and the rest will be divided among Albania, Bosnia, Bulgaria, Croatia, the Czech Republic, Estonia, Georgia, Greece, Kosovo, Latvia, Lithuania, Moldova, Montenegro, North Macedonia, Poland, Romania, Slovakia and Slovenia, the State Department said.

It will help those countries “deter and defend against emergent threats to their sovereignty and territorial integrity” by enhancing their military integration with NATO and countering “Russian influence and aggression,” the department said.

“This assistance demonstrates yet again our unwavering commitment to Ukraine’s future as a democratic, sovereign, and independent state, as well as the security of allies and partners across the region,” it said.

Asked about continued congressional support for the massive aid packages, Austin said the administration will provide its rationale to lawmakers, and “I fully expect that it will continue to receive broad bipartisan support because our leaders recognize how important this is.”

Foreign military financing allows recipients to purchase U.S.-made defense equipment, often depending on their specific needs.

The package announced by Austin includes howitzers, artillery munitions, Humvees, armored ambulances, anti-tank systems and more that is intended to assist Ukraine with its shorter-term needs as it presses a counteroffensive against Russian forces.

“Now we’re seeing the demonstrable success of our common efforts on the battlefield,” he said at a meeting of the Ukraine Defense Contact Group, which was attended by NATO Secretary-General Jens Stoltenberg and Ukraine’s defense minister as well as officials from allied countries.

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Germany and the Netherlands will provide training in demining to Ukrainian soldiers as well as demining equipment, the countries’ defense ministers said on the sidelines of the meeting with Austin. The training will be carried out in Germany. The two countries previously joined forces to send howitzers to Ukraine.

Austin also announced that the U.S. will convene a meeting of international senior leaders to discuss how their various defense industrial bases can best equip Ukraine’s future forces into the future.

Thursday’s contributions bring total U.S. aid to Ukraine to $15.2 billion since Biden took office.

U.S. officials said the new commitments were intended to show that American support for the country in the face of Russia’s invasion remains firm.

Zelenskyy said Ukraine is grateful for the “enormous support” the United States has sent Ukraine and singled out Biden and Congress for praise. He said the U.S. was helping Ukraine “return our territory and lands.”

The announcements came as fighting between Ukraine and Russia has intensified in recent days, with Ukrainian forces mounting a counteroffensive to retake Russian-held areas.

Ukrainian forces in the northeastern Kharkiv region have retaken portions of Russian-held territory there as a Ukrainian counteroffensive in the south has drained some of Moscow’s resources in the area, according to a report from the Washington-based think tank Institute for the Study of War.

Meanwhile, shelling continued near Ukraine’s Zaporizhzhia nuclear power plant, Europe’s largest, with the warring sides trading blame again amid dire warnings from the U.N. atomic watchdog, which has urged the creation of a safe zone to prevent a catastrophe.