[German Chancellor Angela Merkel speaks at the donors Conference for Syria in London]German Chancellor Angela Merkel called on Saturday for better protection at the European Union's external borders in order to maintain the passport-free Schengen zone. Failing to protect the EU's external borders would jeopardise free movement of people which is the basis for the bloc's wealth, Merkel added. In particular, the protection of external borders is not turning out very well where the EU has sea borders, she said, referring indirectly to Greece, which has seen a huge influx of migrants and refugees coming in over water via Turkey, without mentioning the country by name.