Drone attack hits Ukraine; US vows 'consequences' over nukes

KYIV, Ukraine (AP) — An overnight drone strike near the Ukrainian port of Odesa sparked a massive fire and explosion, the military said Monday, as Russia's leadership faced growing resistance to its efforts to call up hundreds of thousands of men to fight in Ukraine.

The airstrike on Odesa was the latest in a series of drone attacks on the key southern city in recent days, and hit a military installation and detonated ammunition when it struck. Firefighters were struggling to contain the blaze, and civilians nearby were evacuated, the Ukrainian military’s southern command said.

It came hours after the United States vowed to take decisive action and promised “catastrophic consequences” if Russia uses nuclear weapons in Ukraine. Concerns are growing that Russia may seek to escalate the conflict once it completes what Ukraine and the West see as illegal referendums in parts of Ukraine under its control.

The voting, which ends Tuesday, happened after thousands of residents had fled and has included images of armed Russian troops going door-to-door to pressure Ukrainians into casting a ballot. Russia announced the “referendums” as its war on Ukraine has bogged down amid a Ukrainian counteroffensive.

“Every night and day there is inevitable shelling in the Donbas, under the roar of which people are forced to vote for Russian ‘peace,’" Donetsk regional governor Pavlo Kirilenko said Monday.

Russia is widely expected to declare the results in its favor, a step that could see Moscow annex the territory and give it the pretext to defend it as its own territory under the Russian nuclear umbrella.

Jake Sullivan, the U.S. national security adviser, said Russia would pay a high, if unspecified, price if it made good on veiled threats to use nuclear weapons in the conflict.

“If...