Greece and its close ally Cyprus, both European Union member states, are locked in a dispute with Turkey over overlapping claims to areas believed to be rich in natural gas.
EU leaders are expected to evaluate the situation at a summit on Sept 24-25, though member states are divided over how best to proceed.
EU foreign ministers also discussed the issue at a meeting on Monday and agreed that Turkey’s move to recall Oruc Reis was a first, positive step, Greek Foreign Minister Nikos Dendias said after the meeting. He added that the EU wanted Turkey to make more efforts to show it respected international law.
Turkey’s presidential spokesman said on Sunday that exploratory talks could resume but that threats of EU sanctions were not helpful.