Ukrainian pilot Nadiya Savchenko

Ukrainian pilot Nadiya Savchenko, who spent nearly two years in a Russian prison, landed in Kiev on Wednesday as part of a prisoner swap, President Petro Poroshenko's Twitter account said. 

The 35-year-old army helicopter pilot returned home after two alleged Russian soldiers, Aleksandr Aleksandrov and Yevgeny Yerofeyev, left Ukraine earlier in the day.