Ukrainian President Viktor Yanukovych is in Krakow to meet with with Polish President Bronislaw Komorowski to discuss Kyiv's prospects for signing an Association Agreement at an upcoming EU summit in Vilnius.
The talks come one month before Ukraine is expected to sign the agreement during an Eastern Partnership summit in the Lithuanian capital.
One of the EU's requests before Ukraine signs the agreement is the release of imprisoned former Prime Minister Yulia Tymoshenko, who is serving a seven-year sentence for crimes related to a 2009 gas deal with Russia.
She says the charges are politically motivated.
Poland, along with Sweden, has been the driving force of the Eastern Partnership program, which seeks to draw ex-Soviet states closer to Western structures.
Based on reporting by UNIAN and Polish Radio