Spokerperson of the President of Ukraine Svyatoslav Tsegolko informed this on Twitter.
"The Presidents of Ukraine and Austria have started conducting negotiations in Vienna," he wrote.
As reported, Poroshenko is paying a visit to Vienna at the invitation of Austrian President Alexander Van der Bellen.
During the visit, Poroshenko will hold bilateral talks with President Alexander Van der Bellen and newly appointed Federal Chancellor Sebastian Kurz. The parties will discuss issues on further deepening of the political dialogue at a high level, trade and economic and investment cooperation between the states, development of the situation in Donbas and strengthening of the EU's sanctions policy in order to support international efforts to restore Ukraine's territorial integrity and sovereignty.