Germany's coordinator for transatlantic ties has criticized US President Donald Trump's decision to withdraw thousands of troops from Germany. Trump has ordered the US military to remove 9,500 troops from Germany, a senior US official said on Friday. 'This is completely unacceptable, especially since nobody in Washington thought about informing its NATO ally Germany in advance,' Peter Beyer, a member of Chancellor Angela Merkel's conservatives, told the Rheinische Post newspaper. Following Trump's decision, German Foreign Minister Heiko Maas said in a newspaper interview that he regretted the planned withdrawal of US soldiers from Germany, describing Berlin's relationship with the United States as 'complicated.'