Suspects accused of handling cash from supporters of US-based preacher Fethullah Gulen; fearing clamp down on critics, opposition parties seek suspension of new fake news law

Selahaddin Gulen brought to Turkey after being captured overseas; his uncle, US-based cleric Fethullah Gulen, is accused by Erdogan of masterminding failed coup in 2016

Turkish leader defiant amid US sanctions threat over Russian missile deal, says 'taking every measure' to prevent repeat of attempted putsch that led to mass crackdown