Joanna Kakissis

Rubio said he would relay the message to President Trump.

In a video address, Ukrainian President Volodymyr Zelensky said his country's military has used technology to halt Russian advances on the front line.

It's not easy.

It's not easy, he said.

We are still actively defending it.

This year, though, we have achieved better results.

Zelensky claims Ukraine's long-range drone strikes have also cut Russian oil refining capacity by 10 percent.

Joanna Kakissis, NPR News, Kyiv.

Russian Foreign Minister Sergei Lavrov told Secretary of State Marco Rubio to evacuate the U.S.

embassy in Kyiv.

Lavrov said the Kremlin is planning strikes on, quote, decision-making centers there.

Rubio said he would relay the message to President Trump.

In a video address, Ukrainian President Volodymyr Zelensky said his country's military has used technology to halt Russian advances on the front lines.

It's not easy.

It's not easy, he said.

We are still actively defending it.

This year, though, we have achieved better results.

Zelensky claims Ukraine's long-range drone strikes have also cut Russian oil refining capacity by 10 percent.

Joanna Kakissis, NPR News, Kyiv.

Ukraine denies targeting the school and says it hit a Russian elite drone unit nearby.