The overextension of the Greek lines proved disastrous. Kemal lured the Greek army ever deeper into the rugged heartland of Anatolia. When he judged that the Greek position was untenable, Turkish forces shattered the Greek line with a major counteroffensive. Kemal then isolated and destroyed the segments of the Greek army, chasing the remnants back to Smyrna. While soldiers, sailors, and journalists from around the world watched from ships anchored in the bay, the Turkish forces burned and sacked the great city of Smyrna, killing about 30,000 Greeks. The Megali Idea went up in smoke on the shores of Asia Minor.