Ukraine war: The latest developments you need to know for Sunday

euronews.com:

1. Drone attack on Russia's Black Sea HQ in Crimea

A small explosive device carried by a makeshift drone blew up Sunday at the headquarters of Russia's Black Sea Fleet on the Crimean Peninsula, wounding six people and prompting the cancellation of ceremonies there honoring Russia's navy, authorities said.

Russian President Vladimir Putin attended Navy Day celebrations in St. Petersburg on Sunday. 

There was no immediate claim of responsibility for the drone explosion in a courtyard at the naval headquarters in the city of Sevastopol. But the seemingly improvised, small-scale nature of the attack raised the possibility that it was the work of Ukrainian insurgents trying to drive out Russian forces.

A Russian lawmaker from Crimea, Olga Kovitidi, told Russian state news agency RIA-Novosti that the drone was launched from Sevastopol itself. She said the incident was being treated as a terrorist act, the news agency said.

Crimean authorities raised the terrorism threat level for the region to “yellow,” the second-highest tier.

Sevastopol, which was seized along with the rest of Crimea from Ukraine by Russia in 2014, is about 170 kilometers south of the Ukrainian mainland. Russian forces control much of the mainland along the Black Sea.

The Black Sea Fleet's press service said the drone appeared to be homemade. It described the explosive device as “low-power.” Sevastopol Mayor Mikhail Razvozhaev said six people were wounded. Observances of Russia’s Navy Day holiday were canceled in the city.

2. President Zelenskyy orders Donetsk evacuation

Ukrainian President Volodymyr Zelensky has called for civilians to evacuate the Donetsk region to escape "Russian terror."

"A government decision has been made on the mandatory evacuation of the