Finance Minister Euclid Tsakalotos said Tuesday's bond sale was "a beginning" and a first sign of confidence in the country's economy. He said Greece remained focused on August 2018 to exit its worst crisis in decades.

"From now on, we are focused on August 2018," Tsakalotos said in a televised statement. "We know that Greek people have suffered a lot, more than they deserved."

"There will be a second and a third (market foray), to approach August 2018 with confidence and emerge from the bailouts."