Turkey's President has declared victory in Sunday's vote that grants the presidential office new sweeping powers.
Recep Tayyip Erdogan says it's a historic decision.
51.4% of voters chose to change the constitution.
But opposition groups say they will challenge the result in court and some foreign observers have said the referendum fell short of international standards.
So, what does the vote mean for Turkey's future and its relations with the European Union?
Presenter: Laura Kyle
Elif Esen - Director for Regional Studies at the Department of International Relations at the Office of the Presidency of the Republic of Turkey.
Ege Seckin - Turkey Specialist at the political risk firm IHS Markit.
Mustafa Akyol - Senior Fellow at Wellesley College's Freedom Project.