Indonesians were stunned earlier this month after a photo emerged of Bogor Mayor Bima Arya opening the new office of Hizbut Tahrir Indonesia (HTI), an organisation that openly rejects democracy and the Indonesian state. Burhanuddin Muhtadi looks at the movement and its strategy to revive a transnational Islamic caliphate.

Bogor Mayor Bima Arya Sugiarto rose to power in 2014 with pledges to eradicate corruption in the civil service, restore order to the city and improve waste management. But as Lies Marcoes writes, over recent months his name has become synonymous with religious intolerance.