Ukrainian President Petro Poroshenko says foreign investment in Ukraine has significantly increased.

"An increase in foreign direct investment as of today is over $0.5 billion, and the total sum last year exceeded $4 billion," Poroshenko said during a working visit to Sumy on Wednesday.

Ukraine has been implementing a number of important reforms while countering military aggression, he said.

"But this does not prevent us from believing in Ukraine's future, believing in the effectiveness of Ukrainian reforms and we will resolutely continue these reforms," he added.