Russia-Ukraine updates: Putin suspends key US-Russia nuclear treaty

President Vladimir Putin said he'd sought an "open dialogue" with the West.

ByMorgan Winsor, Emily Shapiro, Meredith Deliso, Nadine El-Bawab, Bill Hutchinson, Ivan Pereira, Patricio Chile, Kevin Shalvey, Julia Jacobo, Teddy Grant, Jon Haworth, and Mary Kekatos

Last Updated: February 24, 2023, 5:53 AM EST

Almost a year after Russian President Vladimir Putin launched a full-scale invasion of neighboring Ukraine, the two countries are engaged in a struggle for control of areas throughout the east and south.

Putin's forces pulled out of key positions in November, retreating from Kherson as Ukrainian troops led a counteroffensive targeting the southern port city. Russian drones have continued bombarding civilian targets throughout Ukraine, knocking out critical power infrastructure as winter sets in.

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Latest headlines:

Feb 22, 2023, 11:24 AM EST
US believes Russia held failed ICBM test 2 days before Biden visited Ukraine
Feb 21, 2023, 6:46 AM EST
Putin suspends US-Russia nuclear treaty
Feb 21, 2023, 4:41 AM EST
Putin opens Moscow speech on 'historic events'
Feb 20, 2023, 5:39 AM EST
Biden in Kyiv says Putin was 'dead wrong'
Feb 20, 2023, 5:21 AM EST
Biden makes surprise visit to Ukraine

Here's how the news is developing. All times Eastern.

Jan 18, 2023, 5:49 PM EST

Zelenskyy provides update on helicopter crash

Ukrainian President Volodymyr Zelenskyy provided an update on the helicopter crash near Kyiv near a kindergarten.

Zelenskyy said 14 people were killed in total including Ukrainian Interior Minister Denys Monastyrski and one child.

Emergency personnel work at the site of a helicopter crash in the town of Brovary, outside Kyiv, Ukraine, Jan. 18, 2023.
Valentyn Ogirenko/Reuters

Twenty-five people were injured, including 11 kids, the president added.

"Hundreds of people were involved in extinguishing the fire, searching and rescuing the injured, carrying out the initial investigative actions," Zelenskyy said.

The president praised the efforts of kindergarten teachers who rushed in to help.

Women stand near the site of a helicopter crash outside of Kyiv, in Brovary, Ukarine, Jan. 18, 2023.
Sergei Supinsky/AFP via Getty Images

"Thank you for your bold actions, for taking the children out," he said.

Zelenskyy said the Ministry of Internal Affairs will be temporarily led by the head of the National Police of Ukraine.

"The tasks for which the Minister was responsible in the context of our defense operation and ensuring the security of the state have also been distributed," he said.

The cause of the helicopter crash is still under investigation.

-ABC News' Wil Gretsky

Jan 18, 2023, 12:38 PM EST

Putin prepared for long war, Nato says

Russia is preparing for an extended war so NATO must get ready “for the long haul” and support Ukraine for as long as it takes, the alliance’s Deputy Secretary General Mircea Geoana told top European military chiefs Wednesday.

NATO nations must invest more in defense, ramp up military industrial manufacturing and harness new technologies to prepare for future wars, Geoana said, speaking at the opening of the military chiefs’ meeting in Brussels.

-ABC News' Will Gretsky

Jan 18, 2023, 9:40 AM EST

16 people dead in helicopter crash, including 3 children

Sixteen people, including Ukrainian Interior Minister Denys Monastyrsky, died in a helicopter crash near Kyiv, according to national police, the deputy head of President Volodymyr Zelenskyy's office and Ukraine's security service.

PHOTO: The site of a deadly helicopter crash in the town of Brovary, outside Kyiv, Ukraine, Jan. 18, 2023. — The site of deadly helicopter crash in the town of Brovary, outside Kyiv, Ukraine, Jan. 18, 2023.
Viacheslav Ratynskyi/Reuters

Monastyrsky is considered the most senior government official to die since the war started 11 months ago.

-ABC News' Yulia Drozd

Jan 18, 2023, 3:57 AM EST

Helicopter crash near Kyiv kills interior minister

Ukrainian officials were killed on Wednesday morning in a helicopter crash near Kyiv.

Ukraine’s Interior Minister Denys Monastyrskyi, deputy Evgeniy Yenin and the state secretary of the interior ministry, Yuriy Lunkovych, died when a helicopter crashed in Brovary, a town on the outskirts of Kyiv, chief of the national police Igor Klymenko said on Facebook.

Emergency personnel work at the site of a helicopter crash, amid Russia's attack on Ukraine, in the town of Brovary, outside Kyiv, Ukraine, Jan. 18, 2023.
Valentyn Ogirenko/Reuters

The emergency services helicopter crashed near a kindergarten in a residential area, according to officials.

A military stands at the site where a helicopter crashed near a kindergarten outside the capital, Kyiv, on Jan. 18, 2023, amid the Russian invasion of Ukraine.
Sergei Supinsky/AFP via Getty Images

According to the interior ministry, at least 18 people died, including 3 children. Another 22 people, including 10 children, were wounded, officials said.