Russia has repeatedly denied the US allegations, calling them absurd, and warned that Western sanctions are counterproductive measures that undermine global stability.
"President Trump reaffirmed transatlantic unity in holding Russia accountable for its actions in Crimea and eastern Ukraine, and noted the importance of convincing Russia to fulfill its commitments under the Minsk Agreements," the release stated.
Trump met the two leaders during a nine-day trip to the Middle East and Europe, his first foreign visit since taking office.
Commenting on the White House statement, Russian Foreign Ministry spokeswoman Maria Zakharova said that Russia does not intend to return Crimea to Kiev as it is Russian territory. The Kremlin said that Russia does not discuss issues related to its territory with foreign partners.
Crimea rejoined Russia after a 2014 referendum, when almost 97 percent of the region's population voted for the reunification. Sevastopol, which has a federal city status, supported the move by 95.6 percent of votes.