The Patriot missile training for Ukrainian troops at Fort Sill, Oklahoma, is wrapping up soon, an Army spokesman said Tuesday.

Sixty-five Ukrainian soldiers have been training at Fort Sill since mid-January in an expedited training cycle on using the Patriots -- training that typically can last up to a year.

The Ukrainians will depart the Army post in the coming days for Europe, where they will receive additional training, before heading back to Ukraine "in the coming weeks," Col. Marty O’Donnell of U.S. Army Europe/Africa told ABC News.

"In Europe, the Ukrainians training here will meet up with Ukrainians training in Europe, and with U.S., German, and Dutch equipment donations to validate the systems and ensure interoperability," O'Donnell said.

-ABC News' Luis Martinez

The United States is going to speed up the manufacture and delivery of the 31 Abrams tanks President Joe Biden approved sending to Ukraine, a U.S. official confirmed Tuesday.

Instead of making new tanks from scratch, the Department of Defense will now refurbish the hulls of several older models that will be equipped with more modern equipment, according to the official.

The new delivery target date is fall 2023, the official said; previously the anticipated delivery time was believed to be mid-2024.

National Security Council spokesperson John Kirby hinted at the accelerated timeline on Tuesday.

"We're working on that," Kirby said on MSNBC. "There's some changes that you can make to the process to sort of speed that up."

-ABC News' Luis Martinez and Teresa Mettela

Japanese Prime Minister Fumio Kishida visited Ukraine on Tuesday for the first time since the start of Russia's invasion.

In Kyiv, Kishida laid a wreath at the memorial for fallen Ukrainian soldiers. In Bucha, where Ukrainian officials said more than 400 civilians were killed last year by Russian forces, he laid a wreath outside a church before observing a moment of silence and bowing.

"The world was astonished to see innocent civilians in Bucha killed one year ago," Kishida said. "I really feel great anger for all the atrocious acts."

-ABC News' Ellie Kaufman

Ukrainian forces destroyed Russian Kalibr-NK cruise missiles in a drone strike in Crimea as the weapons were being transported by rail, the Ukrainian Main Intelligence Directorate said on their official Telegram channel Monday.

Sergey Aksyonov, an adviser to the head of the Republic of Crimea, which Russia annexed in 2014, confirmed a drone attack on his official Telegram channel.

Debris from the aerial object damaged a household and a shop and one person was injured from the explosions, Aksyonov said.

-ABC News' Ellie Kaufman

Russia plans to move tactical nuclear weapons in Belarus to the country's western borders, Boris Gryzlov, the Russian ambassador to Belarus, said Sunday.

Gryzlov's announcement comes just three days after Russia and the United States clashed in the United Nations over the Kremlin's plans to deploy tactical nuclear weapons in Belarus. U.S. officials denounced the move as a desperate attempt by Russia to avoid military defeat and “threaten the world with nuclear apocalypse."

Gryzlov said in an address aired on the Belarusian STV channel that tactical nuclear weapons "will be moved to the western borders of our Union State and will increase the possibilities for ensuring our security."

The western border of Belarus is shared by Poland, a NATO country supporting Ukraine. Russian forces have used Belarus as a staging ground for the war in Ukraine.

"This will be done despite the noise in Europe and the United States," Gryzlov said.

Ukrainian President Volodymyr Zelenskyy condemned the decision and slammed Belarusian President Alexander Lukashenko, saying he "no longer decides which weapons are on his territory."

"And does (Vladimir) Putin threaten the world? Of course, if Ukraine does not resist, it will fall, Putin will move on, we have emphasized this many times," Zelenskyy said. "With the help of our friends and partners, our army will stand firm and win what is rightfully ours. Victory and our independence."

-ABC News' Will Gretsky