Ukrainian President Volodymyr Zelensky said Wednesday he is traveling to the United States, where he will meet with US President Joe Biden and address Congress.

"On my way to the US to strengthen resilience and defense capabilities of Ukraine," Zelensky said on Twitter, adding he will discuss with Biden cooperation between the two countries and "have a speech at the Congress and a number of bilateral meetings."

The trip will be Zelensky's first outside Ukraine since Russia's invasion began in February.