Biden (left) with Groysman (right) / Photo from UNIAN

"In order to maintain international support for Ukraine, the new team should move forward quickly on Ukraine's reform program, including fulfilling its IMF commitments, as well as on Minsk implementation and the confirmation of a new, reformist Prosecutor General," Biden told Ukraine's newly-elected Prime Minister Volodymyr Groysman over the phone on Thursday evening.

The U.S. Vice President reiterated unwavering U.S. commitment to the prosperity, sovereignty, and territorial integrity of Ukraine.

Read alsoRada dismisses Yatsenyuk, appoints Groysman Prime MinisterBiden also congratulated Groysman on his election, and on the new cabinet and government program of work that were approved by the Rada on Thursday.