delbrueck germany turks safely come germany chancellor angela merkel say sunday dismiss warn ankara citizens take care travel due say increase anti-turkish sentiment tensions berlin ankara bubble months turkey warn saturday come germany foreign ministry say tuesday germans travel turkey risk arbitrary detention even tourist areas want say clearly turkish citizens travel merkel say northwestern german town delbrueck campaign event ahead sept. 24 election journalists get arrest journalists get put custody freedom opinion rule law prevail proud merkel say point german-turkish journalist deniz yucel detain turkey 200 days one 12 german citizens turkish detention political charge four hold dual citizenship think justification prison apply least 11 germans merkel say merkel infuriate turkish government last weekend say would seek end turkey membership talk european union expect win fourth term upcoming election poll give conservatives double-digit percentage lead rival social democrats spd turks safe germany merkel say dismiss ankara 's warn