The German foreign minister has made a surprise visit to Afghanistan, meeting President Hamid Karzai. Frank-Walter Steinmeier’s visit comes on the day that five German soldiers on patrol were slightly wounded in a militant attack.Steinmeier voiced support for a new strategy in Afghanistan. He said: “We agree that we can only succeed with this challenge if we find a regional solution for the problem. It’s good that we take a regional approach with our American friends and integrate Pakistan in our efforts. I’m curious about the outcome of the talks in Washington with the American government and Pakistani representatives.” Germany has about 3,800 troops in the country, and is due to send a further 600 ahead of a presidential ballot in August.