Arlene Foster had been hoping to celebrate her first twelve months in charge of Northern Ireland this week.

Instead, she's found herself forced out of office.

It's got little to do with religion, constitution or the almost four THOUSAND people who've lost their lives during political conflict over the decades.

The DUP leader and Northern Ireland First Minister has had to step down in a bitter row over renewable energy subsidies.

On Profile, Mark Coles looks back at Arlene Foster's life and career and the reasons behind this week's political upheavals.

Producer Smita Patel Researcher Jordan Dunbar.