Nuclear-free status according to the President of Ukraine Viktor Yanukovych, can not guarantee 100% security of Ukraine. Thus the head of the state will demand the security guarantees from the world's nuclear states. It said the President of Ukraine Viktor Yanukovych, opening the meeting of heads of foreign diplomatic institutions of Ukraine. 

"As a country that voluntarily refused from the nuclear capacity, we have the right, and will require confirmation of security guarantees from the world nuclear states" - said Viktor Yanukovych. 
He admitted that Ukraine's non-aligned status is without alternative. 

By materials of RBC-Ukraine