35 years on from the fall of the Berlin Wall, echoes of east-west division linger

35 years ago the Berlin wall fell, reuniting Germans who were divided between east and west for nearly three decades.

As Berliners poured through holes in the concrete to reach the other side, the iron curtain that separated the Soviet Union from the West was shattered.

For some, the event was a tragedy rather than a cause for celebration.

Institute for European Politics research fellow Laura Worsch says Russian President Vladimir Putin calls the breakup of the Soviet Union the "greatest trauma and tragedy in Russian history. So there you can already see that in his world and in his ideology, he would rather have this separation again."

She says it is not just about separation, but also about having military and economic power over people.

Less than a thousand kilometres east of Berlin at the border with Europe, new walls are being built.

Poland is fortifying its border with Belarus to stop illegal migrants, who according to Warsaw are being used by Belarus and Moscow to destabilise the West.

Worsch says this wall is a "humanitarian catastrophe for the refugees, for the migrants that are stuck there in the forest with no infrastructure, no food and no humanitarian aid whatsoever."

This year, people in the German capital will celebrate the fall of the wall with the slogan "uphold freedom."

Worsch draws a link between the Berlin Wall and countries in Europe fortifying their borders.

In September, Germany announced it would be imposing temporary checks on its land borders, citing concerns over immigration.

Austria, Poland, the Czech Republic and Switzerland have also imposed border checks, a move critics say undermines freedom of movement in the European Union.

Decisions made to impose border checks are mostly motivated by