U.S. special representative to Ukraine Kurt Volker attends the 15th Yalta European Strategy (YES) annual meeting entitled “The next generation of everything” at the Mystetsky Arsenal Art Center in Kiev, Ukraine, Saturday, Sept. 15, 2018. (Efrem Lukatsky/Associated Press)

KIEV, Ukraine — The United States special envoy for Ukraine said Saturday that Washington would consider providing more armaments to the country, whose army is fighting with Russia-backed separatist rebels in the east.

U.S. President Donald Trump this year reversed the Obama administration’s refusal to provide lethal aid to Ukraine and has sent more than 200 Javelin anti-tank rockets.

Envoy Kurt Volker told reporters in Kiev that Ukraine has improved its defense capabilities in recent years, but “there are still some gaps in those capabilities. And wherever those gaps are, we are prepared to sit down and talk with Ukraine about what their needs are. They can buy things through our foreign military sales.”

Volker said the United States is concerned about the expansion of Russian naval operations in the Sea of Azov, which borders Ukraine, Russia and the Russia-annexed Crimean Peninsula.

“We do not accept Russian claims about territory in the waters. We believe the presence of Russian military forces has become a provocative, aggressive step, so we are very concerned about that,” he said.

The separatist rebels in eastern Ukraine have long threatened the Azov port of Mariupol; taking the city would be a key step toward their establishing a land corridor between Crimea and Russia.

The U.S. envoy also criticized the elections that separatist leaders have called for November in two eastern regions, saying any voting would be a “completely illegitimate exercise.”

He criticized Russia’s resistance to full deployment of a United Nations peacekeeping mission in eastern Ukraine, where the fighting between the separatists and Ukrainian forces has killed more than 10,000 people since 2014.

“Russia is insisting this be negotiated directly with the proxy entities,” Volker said, referring to the self-declared separatist governments in the Donetsk and Luhansk regions.

“Russia is, in fact, the decision-maker” in eastern Ukraine, he added..

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Kate de Pury contributed to this story.

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