Pope's visit is epoch-making

If the European Union is ever to fulfil its lofty goal of uniting Europe, then Turkey will have to be a member.

Obstacles to its immediate membership pale in comparison to the advantages to the EU and Turkey of allowing the politically and geographically strategic nation full membership.

Until that day comes, the EU and Turkey must still work together despite their differences. They are neighbours with much in common.

This and rising inter-religious tension sets the backdrop to today's visit by Pope Benedict XVI. He will be aware of the outrage of some in Turkey over contentious comments he made in September about Islam.

When the pontiff alights from his plane, he will be in a place steeped in history and at the same time a nation of interaction between two cultures.

In the wake of the Danish cartoons crisis, the conflicts in Iraq, Afghanistan and Palestine, at a time of European handwringing over how to deal with large Muslim minorities, his visit will be a chance to build bridges of understanding or wade in rivers of despair.

The Vatican appears to be on the defensive, while Turkey and the Islamic world are suspicious. This serves neither party. It is impossible to think of this current climate with his predecessor.

But Pope Benedict XVI has a rare chance to reach out and not to lecture as he might be tempted to, given his academic background. His words will be analysed by a nation not as enamoured as it once was by the EU and uncertain of the Vatican.

The potential for trouble and increased tension is obvious. Turkey is a noted hospitable country with a proud and honourable tradition of treating visitors well.

The visit may usher in a new era or antagonise old wounds. The next few days carry immense political and religious overtones.