召见美国大使、与意大利发生严重外交事件，法国外交最近为何频频“闹别扭”？

Group 1 - The article discusses rare diplomatic conflicts involving France, the U.S., and Italy, highlighting France's unusual response to perceived interference in its internal affairs [1][3][4] - France summoned U.S. Ambassador Charles Kushner after he criticized the French government's actions regarding anti-Semitic violence, which France deemed unacceptable [3][4] - The tensions also extend to Italy, where Deputy Prime Minister Matteo Salvini's comments on France's stance towards Ukraine led to France summoning the Italian ambassador [7][8] Group 2 - Kushner's letter to President Macron expressed concerns over rising anti-Semitic incidents in France, which France's Foreign Ministry rejected as unfounded [3][4] - The U.S. State Department supported Kushner's remarks, indicating a shift in diplomatic strategy since his appointment [4][5] - The article notes that the diplomatic incidents reflect broader geopolitical anxieties and a lack of trust in transatlantic relations [1][6]