France and Switzerland are imposing tight security for a looming G7 summit in Evian-les-Bains, with a demonstration to be held Sunday in Geneva serving as their first test.
Memories endure of a 2003 summit in the well-heeled spa town on the French side of Lake Geneva, which saw violence and extensive damage in the nearby Swiss cities of Geneva and Lausanne.
Evian, wedged between Lake Geneva and the Alps, poses particular security challenges.
Geneva Airport is the main arrival point for incoming leaders ahead of the three-day summit starting Monday, while some delegations are basing themselves in Switzerland.
US army Chinook helicopters could be seen at the airport on Thursday.
