The Trump administration’s failure to keep senior adviser Jared Kushner’s trip to Iraq secret isn’t standard practice for top U.S. officials visiting warzones. Such trips are usually kept quiet, with the cooperation of journalists, until the officials arrive in order to ensure maximum security. A senior administration official told reporters Sunday evening that Kushner _ President Donald Trump’s son-in-law _ was in Iraq, even though he was still en route. For the military and security professionals managing the mission, the public disclosure of the unannounced trip was a security breach. Gen. Joseph Dunford, the Joint Chiefs of Staff chairman, also was on board. Although the plane landed safely in Baghdad on Monday, the Iraqi capital is hardly a secure location, having suffered countless extremist attacks over the years. The threat is no less acute today as Iraq wages a bitter battle to try to rid the Islamic State from its …