In this photo provided by the Ukrainian Presidential Press Office, President Volodymyr Zelenskyy attends the drills of the Ministry of Internal Affairs during his working trip to the Kherson region, Ukraine, Saturday, Feb. 12, 2022. (Ukrainian Presidential Press Office via AP)
In this handout photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy works in his office in Kyiv, Ukraine, Sunday, Feb. 13, 2022. Ukraine's president urged calm amid intensified warnings of a possible Russian invasion within days, saying he had yet to see convincing evidence of that. Zelenskyy's comments came as the U.S. updated its estimate of how many Russian troops are now poised near Ukraine's borders to more than 130,000 Sunday. (Ukrainian Presidential Press Office via AP)
A man strolls on a platform by the Sea of Azov in Mariupol, Donetsk region, eastern Ukraine, Sunday, Feb. 13, 2022. (AP Photo/Vadim Ghirda)
A view of Ukraine's national flag waves above the capital with the Motherland Monument on the right, in Kyiv Sunday, Feb. 13, 2022. Some airlines have halted or diverted flights to Ukraine amid heightened fears that an invasion by Russia is imminent despite intensive weekend talks between the Kremlin and the West. (AP Photo/Efrem Lukatsky)
A woman practices using a Kalashnikov assault rifle as members of a Ukrainian far-right group train, in Kyiv, Ukraine, Sunday, Feb. 13, 2022. Russia denies it intends to invade but has massed well over 100,000 troops near the Ukrainian border and has sent troops to exercises in neighboring Belarus, encircling Ukraine on three sides. U.S. officials say Russia's buildup of firepower has reached the point where it could invade on short notice. (AP Photo/Efrem Lukatsky)
Valentyna Konstantynovska, 79 years-old, holds a weapon during basic combat training for civilians, organized by the Special Forces Unit Azov, of Ukraine's National Guard, Sunday in Mariupol, Donetsk region, eastern Ukraine. The United States is evacuating almost all of the staff from its embassy in Kyiv as Western intelligence officials warn that a Russian invasion of Ukraine is increasingly imminent. (AP Photo/Vadim Ghirda)
WASHINGTON — Some airlines canceled flights to the Ukrainian capital and troops there unloaded fresh shipments of weapons from NATO members Sunday, as its president sought to project confidence in the face of U.S. warnings of possible invasion within days by a growing number of Russian forces.