KYIV, June 1 - Ukraine is negotiating with investors and is ready to act as their partner in an oil refinery project, but it needs guarantees for the supply of oil regardless of the political situation, Deputy Head of the President's Office of Ukraine Kyrylo Tymoshenko said.

"We have an idea for our own oil refinery ... This is a big investment. We spoke with several investors, but the state is also ready to invest in such an enterprise. At the same time, we need to understand how we will get oil so as not to depend on any political situations," Tymoshenko said in an interview with Interfax-Ukraine.