KIEV, Sept. 6 - Barring of Ukrainian manufacturers from the Russian market was an economic shock for Kiev, which inflicted losses of at least $15 billion, President Petro Poroshenko said.

"Russia's aggressive closure of its market came as an economic shock for Ukraine. According to some estimates, it cost us at least $15 billion. We lost tens or even hundreds of thousands of jobs, and this economic aggression is a primary reason for plummeting living standards," the president said in his annual address to Parliament on Tuesday.