Translate the following English sentence to French:
"Some people would do well not to boast and brag because these Greek-Turkish relations constantly result in the Greek Government' s backing down and that in itself is a source of further tension."
Et que ne se vantent pas, que ne se glorifient pas certains, car ces relations gréco-turques mènent à des concessions continuelles du gouvernement grec qui seront sources de nouvelles tensions.