Turkey's president has declared victory in Sunday's referendum that grants the presidential office sweeping new powers.

Recep Tayyip Erdogan says it is a historic decision.

Unofficial results show 51.4 percent of voters chose to change the constitution.

But opposition groups say they will challenge the result in court and some foreign observers have said that 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

Guests:

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.

Source: Al Jazeera News