The jailing of Turkey's former top military official, pending a trial on charges of terrorism and plotting to bring down the government, is only the latest of hundreds of arrests of those who pose a threat to the government's power.
Prime Minister Recep Tayyip Erdogan and his AKP party have made Turkey wealthier and more powerful on the world stage. But some Turks are concerned about a loss of civil liberties.
Last week's arrest of senior military officers and the discovery of several weapons caches deepens the investigation into a suspected secularist coup plan.
Prime Minister Erdogan's party escaped being banned by only one vote. Now, say analysts, he must work quickly to bridge the divide between religious AKP supporters and secularists.
The country's highest court is weighing whether to allow a motion to shut down the party, saying its Islamic initiatives cross a constitutional line.
The country's leading secular opposition party has vowed to appeal this weekend's decision to lift a head-scarf ban to Turkey's top court.