Ukrainian President Volodymyr Zelenskiy reacts to media questions during Ukraine Belarus forum in Zhytomyr, Ukraine, Friday, Oct. 4, 2019. Three House committees have released dozens of texts between U.S. diplomats in Ukraine discussing how to handle a response to President Donald Trump???s demands that the country launch an investigation into Joe Biden???s family. (AP Photo/Efrem Lukatsky)

Ukrainian President Volodymyr Zelenskiy speaks during Ukraine Belarus forum in Zhytomyr, Ukraine, Friday, Oct. 4, 2019. Three House committees have released dozens of texts between U.S. diplomats in Ukraine discussing how to handle a response to President Donald Trump???s demands that the country launch an investigation into Joe Biden???s family. (AP Photo/Efrem Lukatsky)

Ukrainian President Volodymyr Zelenskiy speaks during Ukraine Belarus forum in Zhytomyr, Ukraine, Friday, Oct. 4, 2019. Three House committees have released dozens of texts between U.S. diplomats in Ukraine discussing how to handle a response to President Donald Trump???s demands that the country launch an investigation into Joe Biden???s family. (AP Photo/Efrem Lukatsky)

Ukrainian President Volodymyr Zelenskiy speaks during Ukraine Belarus forum in Zhytomyr, Ukraine, Friday, Oct. 4, 2019. Three House committees have released dozens of texts between U.S. diplomats in Ukraine discussing how to handle a response to President Donald Trump???s demands that the country launch an investigation into Joe Biden???s family. (AP Photo/Efrem Lukatsky)

Ukrainian President Volodymyr Zelenskiy speaks during Ukraine Belarus forum in Zhytomyr, Ukraine, Friday, Oct. 4, 2019. Three House committees have released dozens of texts between U.S. diplomats in Ukraine discussing how to handle a response to President Donald Trump???s demands that the country launch an investigation into Joe Biden???s family. (AP Photo/Efrem Lukatsky)

Belarusian President Alexander Lukashenko, left, welcomed by Ukrainian President Volodymyr Zelenskiy during Ukraine Belarus forum in Zhytomyr, Ukraine, Friday, Oct. 4, 2019. Three House committees have released dozens of texts between U.S. diplomats in Ukraine discussing how to handle a response to President Donald Trump???s demands that the country launch an investigation into Joe Biden???s family. (AP Photo/Efrem Lukatsky)

Belarusian President Alexander Lukashenko speaks during Ukraine Belarus forum in Zhytomyr, Ukraine, Friday, Oct. 4, 2019. (AP Photo/Efrem Lukatsky)

Belarusian President Alexander Lukashenko speaks during Ukraine Belarus forum in Zhytomyr, Ukraine, Friday, Oct. 4, 2019. (AP Photo/Efrem Lukatsky)