Athens and its euro zone and International Monetary Fund (IMF) creditors have been locked in talks for months without luck on a deal. Pressure to strike one has intensified as Athens faces a debt payment on June 5 as well as the expiration of its bailout program on June 30. The government said this week it was looking for a deal by Sunday, but sources close to the talks at the so-called Brussels Group of EU/IMF creditors said that was unlikely.