Iran nuclear deal 5 years on: Uncertainty after US withdrawal

The Iran nuclear agreement still survives five years after it was signed in Vienna, but the biggest test is yet to come.

The signing of Iran nuclear deal in 2015 was meant to end the country’s international isolation but the withdrawal of the US has led to increasing tension between Washington, Tehran and the other signatories.

Al Jazeera’s James Bays reports from the United Nations.